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=== 20230308 (Wed.) ===
 * Agenda
   * Announcement
    * LVK meeting : 13 to 16 March 2023 @ Northwestern University, IL, USA [[https://sites.northwestern.edu/lvk2023ciera/|web]]
    * JPS meeting : 22 to 25 March 2023 @ Online style [[https://www.jps.or.jp/activities/meetings/spring/spring_index.php|web]]
    * ICRC2023 (International Cosmic Ray Conference) : 2023/07/26 ~ 2023/08/03 @ Nagoya university, Japan. Registration deadline : 2023/02/20 [[https://www.icrc2023.org/|web]]
   * KAGRA commissioning reports (Yokozawa) [[KAGRA/Subgroups/DET/Meeting/230308|Commissioning230308]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24255|Computation of expected improvement of inspiral range by reduction of line noise / bump]]
   * Commissioning support
    * Investigation of silent run

-----
=== 20241225 (Wed.) ===
 * Agenda
   * Announcement
    * O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(11/15 updated)]] [[https://wiki.ligo.org/Operations/Agenda241114|operation (11/14)]]
    * Scheduled conference
     * LVK meeting: 2024/03/24-27 @Albert Park, Melbourne, Australia
     *
     * GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront
     * Amaldi & GR: 2024/07/14-18 @Scottish Exhibition Centre, Glasgow, UK [[https://iop.eventsair.com/gr24-amaldi16/|web]]
     * ICRC 2025: 2024/07/15-24 @Geneva (Switzerland) [[https://indico.cern.ch/e/icrc2025|web]]
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0162/L2416204/001/KAGRAReport_20241127.pdf|11/27]]
    * An update of the OpsDiv White Paper is underway. The update of the part related to KAGRA DetChar was finished.
    * Selection of KAGRA detchar chair
    * Migration from gw-astronomy (see Takahashi-san's mail) by '''Dec 18'''
    * KAGRA Instrument Science White Paper 2024 [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=16182|draft]]
    * Next meeting:
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * lock loss study in the commissioning (YamaT, Yuzurihara) [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Commissioning support
      * Comment to Helper guardian for lockloss check [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=32036|klog]]
      * lockloss investigartion report [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31912|klog]]
     * Pastavi noise budget for the theoretical noise data based on Komori-san's simulation code [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31984|klog]]
     * Scattering light noise report (11/26) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31911|klog]] [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16289|poster]]

 
-----
=== 20241204 (Wed.) ===
 * Agenda
   * Announcement
    * O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(11/15 updated)]] [[https://wiki.ligo.org/Operations/Agenda241114|operation (11/14)]]
    * Scheduled conference
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://sites.google.com/view/jgrg33|web]]
     * KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/KSC/f2f/2024December|wiki]]
     * LVK meeting: 2024/03/24-27 @Albert Park, Melbourne, Australia
     * GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront
     * Amaldi & GR: 2024/07/14-18 @Scottish Exhibition Centre, Glasgow, UK [[https://iop.eventsair.com/gr24-amaldi16/|web]]
     * ICRC 2025: 2024/07/15-24 @Geneva (Switzerland) [[https://indico.cern.ch/e/icrc2025|web]]
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0162/L2416204/001/KAGRAReport_20241127.pdf|11/27]]
    * An update of the OpsDiv White Paper is underway. The update of the part related to KAGRA DetChar was finished.
    * Selection of KAGRA detchar chair
    * Migration from gw-astronomy (see Takahashi-san's mail) by '''Dec 18'''
    * KAGRA Instrument Science White Paper 2024 [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=16182|draft]]
    * Next meeting:
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * lock loss study in the commissioning (YamaT, Yuzurihara) [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Commissioning support
      * Changed configuration files of DET tools [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31754|klog]]
      * DET report on 11/25 [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31773|klog]]
     * Pastavi
      * Pastavi update: Noise budget mode came back online [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31875|klog]]
     * Update segment lists and cache files during power outage [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31701|klog]]

-----
=== 20241127 (Wed.) ===
 * The meeting was canceled due to the onsite recovery work from the earthquake (11/26 22:47 JST).

-----
=== 20241120 (Wed.) ===
 * Agenda
   * Announcement
    * O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(11/15 updated)]] [[https://wiki.ligo.org/Operations/Agenda241114|operation (11/14)]]
    * Scheduled conference
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://sites.google.com/view/jgrg33|web]]
     * KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/KSC/f2f/2024December|wiki]]
     * LVK meeting: 2024/03/24-27 @Albert Park, Melbourne, Australia
     * GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront
     * KIW12: 2024/05/26~27 @Shanghai, China
     * Amaldi & GR: 2024/07/14-18 @Scottish Exhibition Centre, Glasgow, UK [[https://iop.eventsair.com/gr24-amaldi16/|web]]
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0161/L2416170/001/KAGRAReport_20241113.pdf|11/13]]
    * Update of OpsDiv White Paper is underway. The update of part related to KAGRA DetChar was finished.
    * Selection of KAGRA detchar chair
    * Power outage in Kashiwa campus
     * KAGRA Main Data Server was down. Now the system-B is online.
    * Migration from gw-astronomy (see Takahashi-san's mail) by '''Dec 18'''
    * Next meeting: November 27
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * lock loss study in the commissioning (YamaT, Yuzurihara) [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Commissioning support
       * lockloss study (2024 Nov 11 01:44:32JST) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31617|klog]]
       * Lockloss study 2024-11-07 19:59:15 UTC [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31630|klog]]
     * Summary page update
       * Added Low Noise state [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31632]]


-----
=== 20241113 (Wed.) ===
 * Agenda
   * Announcement
    * O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(10/15 updated)]] [[https://wiki.ligo.org/Operations/Agenda241031|operation (10/31)]]
    * Scheduled conference
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://sites.google.com/view/jgrg33|web]]
     * KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/KSC/f2f/2024December|wiki]]
     * GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0161/L2416113/001/KAGRAReport_20241101.pdf|11/01]]
    * Update of OpsDiv White Paper is underway. The update of part related to KAGRA DetChar was finished.
    * Selection of KAGRA detchar chair
    * Regeneration of the Aggregated Data Set for KAGRA O4a Period
    * Power outage in Kashiwa campus
     * KAGRA Main Data Server was down. Now the system-B is online.
    * Next meeting: November 20 13:00 JST (usual meeting + presentation by Syifa)
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * lock loss study in the commissioning (YamaT, Yuzurihara) [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Commissioning support
      * Labeling the lockloss by the ETMY oplev glitch [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31517|klog]]
      * Lockloss during weekend [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31572|klog]]
      * Lockloss investigation: 2024/11/04 23:29:09 JST [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31515|klog]]
      * Automation of lockloss by ETMY oplev glitch [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Summary page
      * Tested new version of SummaryPage on test server [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31462|klog]]
      * Restart Omicron process [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31553|klog]]
      * Restart Hveto process [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31554|klog]]
      * Trial to run the summary page on detchar cluster [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31566|klog]]
      * Restart Fscan process [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31568|klog]]
      * Is it earsy to treat changing IP address of the computer node? --> Probably easy
     * Line noise investigation
      * Violin modes moving [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31594|klog]]
      * Sideband around lines appear [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31593|klog]]
      * What is the definition of segment bar? --> K1:GRD-IFO_STATE_N == 100. It's better to use >= 100.
     * Scattered light noise
      * Analysis of the recent commissioning data by Shih-Hong Hsu [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16166|slide]]
      * The origin of the scattered light noise was not changed during 10/7 14:00~21:00 UTC, because the frequency was same.
      * Coherence-spectrogram will be new window to investigate the scattered light noise. This time, they checked the coherence between DARM and PRCL and between DARM and MICH.

-----
=== 20241106 (Wed.) ===
 * Agenda
   * Announcement
    * O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(10/15 updated)]] [[https://wiki.ligo.org/Operations/Agenda241031|operation (10/31)]]
    * Scheduled conference
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://sites.google.com/view/jgrg33|web]]
     * KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0161/L2416113/001/KAGRAReport_20241101.pdf|11/01]]
    * Update of OpsDiv White Paper is underway.
    * Chair of KAGRA OpsDiv and selection of KAGRA detchar chair
    * Next meeting: November 13
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * lock loss study in the commissioning (YamaT, Yuzurihara) [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Commissioning support
      * lockloss investigation: 2024/11/05 09:51~10:46 JST [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31499|klog]]
      * lockloss investigation for Unknown Lockloss list (nightly observing) 2024/10/16 22:13:41 JST [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31502|klog]]
     * Summary page
      * Tested new version of SummaryPage on test server[[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31462|klog]]


-----
=== 20241030 (Wed.) ===
 * Agenda
   * Announcement
    * O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(10/15 updated)]] [[https://wiki.ligo.org/Operations/Agenda241017|operation (10/17)]]
    * Scheduled conference
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://sites.google.com/view/jgrg33|web]]
     * KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0160/L2416086/001/KAGRAReport_20241018.pdf|10/18]]
    * Update of OpsDiv White Paper is underway.
    * Next meeting: November 6
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * lock loss study in the commissioning (YamaT, Yuzurihara) [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Commissioning support
      * lockloss investigation: 2024/10/29 2024-10-29 08:38:10 JST [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31451|klog]]
     * Summary page
      * Tested new version of SummaryPage [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31462|klog]]
      * Due to a lack of memory in the computer, the process failed. Except for that, the process seems to be working well.
      * Modified the unit for IMC cavity noise on the SummaryPage [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31411|klog]]
     * Pastavi
      * Pastavi update: added the button for channels related to ASC or VIS oplevs [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31453|klog]]
     * Update from Kyujin
      * Syifa is preparing the defense of the master thesis. The defense is planned for December 4th.
      * It's better to give a brief presentation on the coming detchar meeting. After the defense, she will give a (poster) presentation at the coming f2f meeting.
     * Related to segment files (Uchikata, Narikawa)
      * They started the preparation of the veto definer file for O4a data, with GuoChin's help.
     * Line noise investigation
      * Takahiro S Yamamoto gave a presentation on the monitor tool development [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16108|slide]] [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15768|memo]]
      * The next task is to make the monitor to generate the plots and HTML automatically and put the attractive name of the monitor.
     * Scattered light noise
      * Shih-Hong, Hsu gave a presentation on the identification of the frequency. [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16109|slide]]
      * When they generate the Q-transform plot, the script can identify the frequency of the scatter object.
      * During 2024/10/07 14:00-21:00, the frequency did not change significantly. The origin of the scattered light noise will be the same.
      * The discussion to have the separate meeting started.

-----
=== 20241023 (Wed.) ===
 * Agenda
   * Announcement
    * O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(10/15 updated)]] [[https://wiki.ligo.org/Operations/Agenda241017|operation (10/17)]]
    * Scheduled conference
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://sites.google.com/view/jgrg33|web]]
     * KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0160/L2416086/001/KAGRAReport_20241018.pdf|10/18]]
    * Next meeting: October 30
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * lock loss study in the commissioning (YamaT, Yuzurihara) [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Commissioning support
      * Added MICH and PRCL feedback signal on Gauch (non-Gaussian monitor) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31349|klog]]
      * Computation of expected improvement of inspiral range by noise subtraction of violin mode and mitigation of the noise bump [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31370|klog]]
   * Summary page update
      * Added "IFO Lock" state to the OMC tab[[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31386|klog]]
     * Line noise investigation
      * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16098|slide]]
     * Scattered light noise
      * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16099|slide]]

-----
=== 20241016 (Wed.) ===
 * Agenda
   * Announcement
    * O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(10/15 updated)]] [[https://wiki.ligo.org/Operations/Agenda241010|operation (10/10)]]
    * Scheduled conference
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://sites.google.com/view/jgrg33|web]]
     * KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0160/L2416068/001/KAGRAReport_20241002.pdf|10/02]]
    * Next meeting: October 23
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * lock loss study in the commissioning (YamaT, Yuzurihara) [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Commissioning support
      * Scattered light noise 2024/10/07 [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31249|klog]]
     * Summary page update
      * Added plots of polarization monitor channels [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31250|klog]] [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/summary/day/20241010/isc/polarization/#locked_rf_|summary page]]
      * Added Low Noise state to OpLev plot [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31308|klog]]
      * Removed "RF lock" state [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31313|klog]]
      * Update guardian state [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31338|klog]]
      * Changed the order of state on the SummaryPage [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31339|klog]]
     * Pastavi update: block the comtamination of the artificial signal [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31272|klog]]

-----
=== 20241009 (Wed.) ===
 * Agenda
   * Announcement
    * O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(9/15 updated)]] [[https://wiki.ligo.org/Operations/Agenda240919|operation (09/19)]]
    * Scheduled conference
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://sites.google.com/view/jgrg33|web]]
     * KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0160/L2416068/001/KAGRAReport_20241002.pdf|10/02]]
    * Next meeting: October 16
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * lock loss study in the commissioning (YamaT, Yuzurihara) [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      * Recovery work after Kashiwa cluster maintenance, such as cache file and segment production. (Uchikata) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31182|klog]]
      * Recovery of bruco server from Kashiwa planned power outage(YamaT) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31231|klog]]
      * Recovery of Pastavi from power outage (Yuzurihara) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31244|klog]]
     * Commissioning support
      * Periodic glitches in the IRX QPD (Oshino) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31220|klog]]
      * Checked the laser power of the IRX (Oshino) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31219|klog]]
      * Added DHARD and CHARD control signals plot [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31246|klog]] [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/summary/day/20241009/isc/asc_arm_control/#locked_lsc_|summary page]]
     * Glitch investigation (Kihyun)
      * Hveto analysis with triggers of SNR >= 8 is underway.
     * Scattered light noise characterization (Hsu Shih-Hong)
      * The origin of the 300 ~ 400 Hz oscillation is different from scattered light noise.
      * For the previous research on scattered light noise, see [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15055|slide]]
     * Update of condor on kmst cluster (Chia-Hsuan)
      * He tried to use the condor_valut_storer. However, it required authentification by the administrator to activate the command.

-----
=== 20241002 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(9/15 updated)]] [[https://wiki.ligo.org/Operations/Agenda240919|operation (09/19)]]
    * Scheduled conference
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://sites.google.com/view/jgrg33|web]]
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0160/L2416034/001/KAGRAReport_20240909.pdf|09/09]]
    * Next meeting: October 9
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * lock loss study in the commissioning (YamaT, Yuzurihara) [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Upgrade DetChar computers (YamaT)
      * Due to Kachiwa maitanance, nds2 is working partially.
     * lock loss study in the commissioning (YamaT, Yuzurihara)
      * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31068|lockloss investigation: 2024/09/11 16:45:56 JST]]
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31135|Shutdown the Pastavi server for power outage]]
     * Characterization of relationship between Omicron triggers and inspiral range during O4a (Ishikawa) [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0160/G2416062/001/report241001.pdf|slide]]
     * Line investigation (Takahiro.S.Yamamoto) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16063|slide]]
     * Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      * Recovery work after Kashiwa cluster maintenance, such as cache file and segment production. (Uchikata)
      * Update of the condor in Kashiwa cluster to version 23.0.14
       * This version looks fine for stochastic search (Chia-Hsuan)

-----
=== 20240911 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(8/27 updated)]] [[https://wiki.ligo.org/Operations/Agenda240829|operation (08/29)]]
    * Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * LIGO Detector Characterization in the first half of the fourth Observing run [[https://arxiv.org/abs/2409.02831|arxiv]]
    * Scheduled conference
     * JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.[[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. [[https://lvkmeeting2024.ifae.es/|web]]
      * block schedule for the meeting is now ready
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://www-tap.scphys.kyoto-u.ac.jp/jgrg/|web]]
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0160/L2416022/001/KAGRAReport_20240829.pdf|09/02]]
    * Next meeting: October 2. We will skip the meeting on September 18 and 25.
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * lock loss study in the commissioning (YamaT, Yuzurihara)
      * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=30987|Segment for lockloss of LSC_LOCK guardian]]
      * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=30997|lockloss investigation: 2024/09/05 14:50:00 JST]]
      * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31032|lockloss investigation: 2024/09/09 10:36:18 JST]]
      * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31045|Helper guardian for lockloss check]]
      * lock loss investigation tool was developed. The web page will be automatically updated: [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/lockloss_o4b_break.html|web]]
     * cache file at Kashiwa cluster (Uchikata)
      * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=31051|Cache file genetation at kmst2]]
      * The cache file included duplicated frame files. By changing the execution timing, this issue was solved.
     * Segment reproduction (Uchikata, Narikawa, YamaT, Yuzu)
      * There was a missing period at the Kamioka cluster. While generating the segment at the Kashiwa cluster, we noticed that it's important to use the consistent version of gwpy and python-ligo-xml to upload the segment for DQSEGDB. We found a suitable conda environment at the Kaashiwa cluster. The segment file generated in the Kashiwa cluster looks consistent with the one generated in the Kamioka cluster. The next step is to ask Robert to include the updated segments on DQSEGDB.
     * Line investigation (Takahiro.S.Yamamoto)
      * The script was developed to merge the spreading line noise into one line noise. Although the test script is working well, it requires more time to mature.

-----
=== 20240904 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(8/27 updated)]] [[https://wiki.ligo.org/Operations/Agenda240718|operation (07/18)]]
    * Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * Scheduled conference
     * JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.[[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. [[https://lvkmeeting2024.ifae.es/|web]]
      * block schedule for the meeting is now ready
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://www-tap.scphys.kyoto-u.ac.jp/jgrg/|web]]
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0160/L2416022/001/KAGRAReport_20240829.pdf|09/02]]
    * Next meeting: September 11. We will skip the meeting on September 18 and 25.
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * KAGRA student workshop (Yuzurihara)
       * During the KAGRA student workshop (2024/08/27-29), we visualized the KAGRA data around the trigger time of high chi^2 statistics by using the time-frequency map [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=30968|klog]] [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=16024|JGWdoc]]
       * scattered light affects the high SNR? --> Chi^2 can mitigate the effect of the scattered light
       * What about the effect on parameter estimation? --> I'm not sure. The effect can be evaluated by analyzing the data injected with scatter light noise.
        * Providing segment information on the scattered light noise might be helpful. The difficulty is in identifying the time that occurs when the scattered light is present.
        * Chia-Jui-san mentioned the method using the Omicron triggers and Q-transform.
       * (Narikawa) The other trigger list of high SNR was used? --> Not yet, due to the time constraints
     * Update contents of summary page (Oshino)
      * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=30969|klog]]
     * Related to segment files (Uchikata, Narikawa)
      * There was a missing period at the Kamioka cluster. While generating the segment at the Kashiwa cluster, we noticed that it's important to use the consistent version of gwpy and python-ligo-xml to upload the segment for DQSEGDB. We found a suitable conda environment at the Kaashiwa cluster. The segment file generated in the Kashiwa cluster looks consistent with the one generated in the Kamioka cluster.
      * The automatic generation of the cache file sometimes fails at the Kashiwa cluster. We doubt the cause is the cluster setting. We are discussing how to avoid the failure of cache file generations.
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
       * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15681|slide]]
       * He injected the BNS signal into the data using Bilby and showed the reconstruction result.
       * The duration of the BNS template (fmin=30Hz) is 250s.
     * Line investigation (Takahiro S Yamamoto)
      * He implemented the code to generate the normalized spectrum. By eyeball check, the result looks consistent with the results by YamaT-san.
      * The next step is to fit the line peak using Gaussian or Lorenzian distribution and characterize the line width and stability of the frequency.
      * Clustering might be necessary to merge the broad line noise into one line.
      * [[https://git.ligo.org/yamamoto2/line_identification_for_kagra|Working repo(internal)]]

-----
=== 20240807 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(7/18 updated)]] [[https://wiki.ligo.org/Operations/Agenda240718|operation (07/18)]]
    * Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * Request to reduce batch job during 8/27-30 for the Student Workshop (See [kagra 06769])
    * Scheduled conference
     * KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/KSC/f2f/2024August|web]]
      * Satellite meeting for noise reduction of KAGRA: 2024/08/24 9:00~12:00 [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/KSC/f2f/2024August#Day4%3A%20August%2024%20(Saturday)%20JST%209%3A00-12%3A00|web]]
     * JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.[[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. [[https://lvkmeeting2024.ifae.es/|web]]
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://www-tap.scphys.kyoto-u.ac.jp/jgrg/|web]]
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0159/L2415918/001/KAGRAReport_20240729.pdf|07/29]]
    * Next meeting is September 4
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
      * Although they updated the way of clustering, the basic feature didn't change. [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15876|slide]]
     * The usage manual for veto definer was prepared by Uchikata-san [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/DAWG/Detchar/Veto%20Definer%20File%20(VDF)|usage manual for veto definer]]
     * Hveto analysis
      * The comparison between Omicron 2.4 and 3.2 was done

-----
=== 20240731 (Wed.) ===
 * Wide presentation of PhD thesis
  * Date: Wednesday, July 31 at 11:00 JST/KST or 2:00 UTC. (20~30 min. for the presentation. 10~15 min. for the question.)
  * Presenter: Kihyun Jung
  * Thesis title: Classification and Analysis of KAGRA Glitch
  * Thesis manuscript: https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15866

-----
=== 20240724 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(7/18 updated)]] [[https://wiki.ligo.org/Operations/Agenda240718|operation (07/18)]]
    * Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * Scheduled conference
     * KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/KSC/f2f/2024August|web]]
     * JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.[[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. [[https://lvkmeeting2024.ifae.es/|web]]
     * JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) [[https://www-tap.scphys.kyoto-u.ac.jp/jgrg/|web]]
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0158/L2415897/002/KAGRAReport_20240716.pdf|07/16]]
    * Next meeting is 08/07(Wed). Next week, we will have Wide presentation of PhD thesis by Kihyun.
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Add cooler ondotori page (Oshino) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=30353|klog]]
     * [[https://git.ligo.org/computing/helpdesk/-/issues/6176#note_1061004|KAGRA segment file production stopped on 28 June 2024]]
      * The cause was the stop of cache file at Kamioka computer due to the expire of gps time package.
      * To return to an automated setup, would it be possible to have the incomplete files created in one directory and only moved to their final location after the whole day's segments are finalized?
      * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=30519|Reduce the cadence of segment production at Kamioka site]]
     * On this Friday, we shut down the Kamioka computers due to a planned power outage.
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
      * They are updating the way to cluster the triggers.
     * veto definer (Uchikata)
      * When we make veto definer, we need the segment updated in DQSEGDB. But, currently, the necessary segment was not uploaded on DQSEDB. We will ask Robert to include them soon.
      * Uchikata-san will summarize the procedure at the DAC wiki.
     * Line identification (Takahiro S. Yamamoto)
      * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15909|slide]]
      * By using Fscan, the line noise in O1 data was investigated. [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15768|Fscan]]
      * The goal is to obtain the line frequency and the typical width.
      * Investigating the stability of line noise is important. It will be the first task.
     * Stochastic search (Chia-Hsuan)
      * The line list computed from the data with a shorter duration might be important. Currently, we use the line list of 0.001 mHz resolution. The unification between the stochastic analysis and the detchar analysis is necessary.
     * Parameter estimation analysis with KAGRA O4a data (Kobayashi)
      * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15905|slide]]
     
-----
=== 20240717 (Wed.) ===
 * canceled

-----
=== 20240710 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(6/17 updated)]]
    * Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * Future meeting
     * JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.[[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/KSC/f2f/2024August|web]]
     * LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. https://lvkmeeting2024.ifae.es/
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0158/L2415869/001/KAGRAReport_20240702.pdf|07/02]]
     * Recovery from the Noto Earthquake Disaster
    * Next meeting is 07/24(Wed).
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Comparison of Hveto results according to Omicron HPF(Kihyun Jung) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=30318|klog#30318]]
     * (Yamat) The Summary page needs to be updated. It is now a bottleneck for updating the detchar tools in IGWN conda environment.
     * CBC trigger list for O4a (Uchikata, Narikawa)
      * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15876|slide]]
      * Check the details for large chi^2 /SNR triggers.
      * Generate the lists automatically and upload it to the daily summary page.
      * Extend the analysis to the CBC search.
      * We may need to gate the IPC error segments for the search.
     * O4a event rate by pyCBC search (Narikawa, Uchikata)
      * If configuration is same as Omicron, we can compare the results.
      * How does pycbc treat the time-clustering? --> clustered triggers within 10 seconds.
      * How the clustering length is decided? In Omicron case, the 0.1 clustering length is decided empirically.
     * Hveto analysis (Kiyun)
      * Kiyun agreed with the wide presentation for KAGRA collaborators, which will be an alternative presentation in the f2f meeting.
     * Deep clean(Shu-Wei Yeh)
      * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15878|slide]]
      * They checked the response on the strain at the hardware injection. For these data, they didn't apply the deep clean.
     * Stochastic search (Chia-Hsuan)
      * Yuzurihara shared the procedure to submit the application of the account on the kmst cluster.
      * Detchar member (Uchikata+) will prepare the veto definer for IPC glitches instead of segment file.

-----
=== 20240703 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(6/17 updated)]]
    * Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * Future meeting
     * JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.[[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/KSC/f2f/2024August|web]]
     * LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. https://lvkmeeting2024.ifae.es/
    * Announcements from Operations (Sawada)
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0158/L2415847/001/KAGRAReport_20240618.pdf|06/18]]
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
     * provide the CAT1 veto-definer file for IPC glitch (Uchikata)
 * Minutes
     * Bruco configuration for MICH (yamaT) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=30133|klog#30133]]
      * Bruco server was replaced to new system
     * Inconsistence of number of triggers between Omicron versions [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=30101|klog#30101]]
      * On LIGO summary page, the old Omicron(>v4.0) seems to run for Hveto analysis.
      * For Hveto at different computers (Kamioka, Kashiwa, KISTI), we should use the Omicron with the consistent versions.
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
      * They generated the triggers for O4a data. There were no daily fluctuations in the triggers.
      * The comparison between the O4a triggers and triggers computed by the simulated Gaussian noise is underway. The Gaussian data doesn't include the line noise.
     * Report of updating the DeepClean results using training and cleaning times that avoid IPC glitches (Shu-Wei Yeh) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15868|slide]]
      * Subtraction of the 60 Hz line noise and noise monitored by the microphone is underway.
      * They showed some improvement by excluding the data of IPC glitches.
      * (yamaT) How did you confirm the current-voltage monitor can track the line drift? The coherence might not be the evidence for a narrow frequency bin.
      * (yamaT) Acoustic injection test many times, they investigated the coupling functions between sound and DARM.

-----
=== 20240626 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(6/17 updated)]]
    * Power outage of ICRR Kashiwa campus on 2024/09/28 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * Conference
     * JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.[[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University
    * Announcements from Operations (Sawada)
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0158/L2415847/001/KAGRAReport_20240618.pdf|06/18]]
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
 * Minutes
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=30013|Usage manual was updated for the latest Omicron (v4.1)]]
      * We compared the number of triggers between different Omicron versions (v4.1 and v3.1) in root/hds5/xml formats.
      * Based on the reply from the developer, the Omicron (v3.1) had the bug. The developer recommends using the latest Omicron for the analysis.
      * Yuzurihara updated [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/DAWG/Detchar/Omicron|usage manual]] for v4.1 using the hdf5 format.
     * Update for gates found in stochastic search (Chia-Hsuan)
      * The gating with 3.5 s tme window was applied in pygwb when the large transient (IPC glitch) occurred. To mitigate the length losing by gating, it's better to usr the veto-definer.
      * Uchikata-san have an experience on the veto-definer. She will try to prepare it.
      * Currently they analyzed O4a data (L1, H1, K1) on CIT. But, the L1 and H1 data are stored in system-B(kmst2).
     * Trigger generation for O4a data by pycbc (Narikawa)
      * They showed the result of comparing the O4a triggers with the triggers computed by Gaussian noise (~5days). The discussion is underway.
     * Hveto analysis (Syifa)
      * Analysis-flag change: https://hveto.readthedocs.io/_/downloads/en/stable/pdf/
     * Glitch investigation (Chia-Jui)
      * They explained how to apply the whitening: (1) estimate the ASD from the data of (tc-58)~(tc-2), (2) apply the whitening by using the estimated ASD
      * Based on their request, we shared the list of aux. channel which was used in O4a Hveto analysis in Summary page. [[https://github.com/gw-detchar/tools/blob/master/Hveto/etc/k1-hveto-daily-o4.ini|git]]


-----
=== 20240619 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': O4b will now end 9 June 2025.
     * [[https://observing.docs.ligo.org/plan/|Run plan(6/17 updated)]]
    * Power outage of ICRR Kashiwa campus on 2024/09/28 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * Conference
     * JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.[[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University
    * Announcements from Operations (Sawada)
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0158/L2415835/001/KAGRAReport_20240607.pdf|06/07]]
     * new commissioning leader: Takafumi Ushiba
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
 * Minutes
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28986|O4a summary page]]
      * This task is finished. The summary page is available [[https://www.icrr.u-tokyo.ac.jp/~uchikata/Detchar/O4aSumm/gps/1368975618-1371337218/|here]].
      * The data set for the inspiral range is also available on system-B.
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
      * They are working on comparing the effect by changing the segment durations of 256s and 128s.
      * In the future, we will connect the trigger results with the summary page.
      * Currently they produced the triggers by using the template of 1.4-1.4Msun.
     * Glitch classification
      * They showed the summaries of the glitch classification.
      * The glitches located in the upper right on Q-transform might be related to the lockloss.

-----
=== 20240612 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''10 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda240321|internal discussion]], [[https://observing.docs.ligo.org/plan/|public announcements]]
     * [[https://observing.docs.ligo.org/plan/|Run plan(5/23 updated)]]
    * Power outage of ICRR Kashiwa campus on 2024/09/28 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * Conference
     * JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.[[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University
    * Announcements from Operations (Sawada)
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0158/L2415835/001/KAGRAReport_20240607.pdf|06/07]]
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
 * Minutes
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      * Computed the inspiral range from the strain channel with gwpy. Basically they used only the data in the science mode.
      * The histogram of the inspiral range changed. We can see the peak on the histogram.
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
      * They computed the triggers by using pycbc package from the strain data and packed in the xml.
      * The analyzed data include the IPC glitches. But, the chi-square could mitigated the glitch effect.
      * (Yuzu) Did you find the interesting or new triggers? --> no. Data seems stable.
      * (YamaT) Can you compare the trigger histogram with the one from Gaussian noise data? --> not yet. It's possible by replacing the input data with the generated Gaussian noise.
     * Glitch classification (Hsu Shih-Hong)
      * They took the average of the Q-spectrograms for each class. The obvious common features were not observed.
      * They tried to extract the common features on the Q-spectrograms.
      * It's important to take into account of the whitening effect. The whitening in gwpy could make the sharp glitch wider.

-----
=== 20240605 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''10 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda240321|internal discussion]], [[https://observing.docs.ligo.org/plan/|public announcements]]
     * [[https://observing.docs.ligo.org/plan/|Run plan(5/23 updated)]]
    * Next 10yr Task Force Meeting: 2024/06/07 17:00JST, see [kagra 06570]
    * Power outage of ICRR Kashiwa campus on 2024/09/28 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * JPS registration: 2024/5/21~6/5 [[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * Does anyone have a presentation related to DetChar activity?
    * Announcements from Operations (Sawada)
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0158/L2415802/001/KAGRAReport_20240522.pdf|05/22]]
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
   * isotropic stochastic search result (Chia-Hsuan)
 * Minutes
  * In next JPS meeting(Sep.), YamaT plan to talk the detchat topics related to the web service (https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/).
  * Issue of monopolizing the CPU resources of system-B cluster. (this might be the third time in my memory)
   * Yuzurihara contacted the administrators to set some threshold or update the cluster settings so that the job submission system will manage the jobs submitted by many users effectively. Still no response from the administrators.
  * isotropic stochastic search result (Chia-Hsuan) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15825|slide]]
   * They analyzed the O4a KAGRA data with other detectors by using the pygwb pipiline, at CIT cluster.
   * They found the strange peak on the gating length. They shared the list of the gated time. The comparison between the list and the time of IPC glitches will be done soon.
   * They reported the coherence between KAGRA and LIGO (Livingston and Hanford). About the coherence of 960 and 961 Hz, yamaT pointed out that it came from the timing system. We use the same timing system between KAGRA and LIGO. See also [[https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=71308|alog]].
    * AI for detchar: Collect the information of the remaining frequencies with coherence
   * (YamaT) How did you integrate the data for narrow-line analysis? --> all of the science mode
   * How was the gate process applied?
   * What is the good frequency band for the analysis? --> (YamaT) Comments from the calibration side: use 30~1000Hz.
  * Glitch classification (Chia-Jui) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15824|slide]]
   * They reported the glitches detected in O4a data can be classified into several classes by using unsupervised classification.
   * Q-transform plots are available [[https://git.ligo.org/agoodmanjerry/k1-o4a-glitches/-/tree/main/O4a-no-ipc/K1/q_spectrogram_4s_snr_g10?ref_type=heads|git]].
   * Yama-T commented on slack that the glitch effect might be widen by the whitening process.
  * O4a summary page (Uchikata)
   * We have decided to compute the inspiral range without the gwsumm. The computation is on-going.
  
-----
=== 20240529 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''10 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda240321|internal discussion]], [[https://observing.docs.ligo.org/plan/|public announcements]]
     * [[https://observing.docs.ligo.org/plan/|Run plan(5/23 updated)]]
    * Next 10yr Task Force Meeting: 2024/06/07 17:00JST, see [kagra 06570]
    * Power outage of ICRR Kashiwa campus on 2024/09/28 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
    * Renewal of the account on KAGRA Main Data System: deadline 2024/05/31
    * JPS registration: 2024/5/21~6/5 [[https://www.jps.or.jp/activities/meetings/annual/annual-index.php|web]]
     * Does anyone have a presentation related to DetChar activity?
    * KAGRA site report [[https://gwdoc.icrr.u-tokyo.ac.jp/DocDB/0158/L2415802/001/KAGRAReport_20240522.pdf|05/22]]
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
 * Minutes
  * Glitch analysis (Ishikawa)
   * The Omicron analysis for non-stationary noise around 360 Hz is on-going.
   * There might the 5-minutes fluctuation on the inspiral range. The analysis for other data will be done next.
  * Glitch analysis (Chia-Jui)
   * The Omicron analysis for the science mode excluding the IPC glitch is on-going.
   * (Guo Chin Liu) Do you have a flag to indicate the glitch time? --> Omicron provide the time of the glitch.
   * (Guo Chin Liu) What is the ratio in the science mode?
   * He found several characteristic types of glitches in KAGRA O4a data. For details, see [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15808|slide]].
   * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=29675|klog]]
  * Hveto analysis (Syifa)
   * Hveto analysis with high pass filter is on-going.
  * Dedicated O4a summary page (Uchikata)
   * She found that the cache file for O4a data has the issue of overlapping or missing. She updated the cache file. [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=29592|Modification of cache files at system B]]
  * (Sawada) Matlab on the LDAS cluster will stop on the next maintenance day. If you want to use the Matlab on LDAS cluster, please contact with Sawada-san.


-----
=== 20240515 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''10 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda240321|internal discussion]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * KAGRA detchar liaison to CBC group
     * Nami Uchikata as the new liaison between the CBC group and the KAGRA Detchar group.
    * KAGRA site report
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
 * Minutes
  * Update contents of summary page (Oshino)
   * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=29496|4.5 Hz peak of IMC]]
   * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=29439|Modified IMC page on SummaryPage]]
  * Hveto (Shifa)
   * By changing cutoff frequency of 8 or 12Hz, they checked the Hveto results and found the artificial glitches around 10Hz.
   * When they apply the HPF with 6 Hz or 4 Hz, the artificial glitches around 10Hz disappeared.
   * (YamaT) Do you know the design of HPF (butterworth?)?
   * (Uchikata) Minimum frequency of Hveto should be larger than the cutoff frequency of high pass filter in Omicron.
    * (YamaT) It might make the ripple.
   * (Yuzu) You can analysis the Omicron triggers with the higher cut-off frequency.
  * Glitch analysis (Ishikawa)
   * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=29454|klog#29454]] [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15785|slide]]
   * (Chia-Jui) How do you set-up the Omicron configuration files? --> Same as commonly used one.
   * (Chia-Jui) What was the typical SNR of 300-500Hz? --> SNR 6~10? He didn't have a clear answer. He will check it.
  * Glitch analysis (Chir-Jui)
   * Omicron analysis without high pass filter was done.
   * In page 7, there were gaps due to the exceed of threshold of glitch rate. At that time, Omicron failed due to the error.
   * We confirmed the goal of the Detchar activity is to contribute the sensitivity or noise hunting of KAGRA.
   
-----
=== 20240508 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''10 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda240321|internal discussion]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * Introduction of new comer
    * KAGRA site report
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
 * Minutes
  * Omicron triggers at System B (Uchikata) [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=29328|klog]]
  * Update contents of summary page (Oshino)
   * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=29408|Add shindo plots on SummaryPage]]
   * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=29387|Update navigation bar on SummaryPage]]
  * line identification by fscan for kagra (Takahiro.S.Yamamoto) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15768|slide+supplement]]
   * What is the frequency resolution?
   * Segment duration of 1800 s is a typycal value in continuous wave search? --> yes
   * Is is posible to real-time monitoring of 60 Hz?
   * What is the advantage to used fscan?
   * The result for O4a data is available on the [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/fscan/summ/fscans_2023_05_31_09_00_00_JST/K1_CAL-CS_PROC_DARM_STRAIN_DBL_DQ/fscanK1_CAL-CS_PROC_DARM_STRAIN_DBL_DQ_K1_1369526418_1369612818.html|web]]. Due to computational costs, we didn't use aux. channels.
  * Hveto analysis (Kyujin, Kihyun, Syifa)
   * By adding the high pass filter, the artificial glitches appeared, although there is no such glitches in Uchikata-san's results.
  * Omicron on K1 O4a Data (Chia-Jui) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15769|slide]]
   * They proposed the way to identify the IPC glitches. --> The way to identify the IPC glitches was already established.
   * They found three classes of glitches in KAGRA data.
  * Dedicated summaru page for O4a KAGRA (Uchikata)
   * When we compute the inspiral range by reading the data from NDS server,

-----
=== 20240424 (Wed.) ===
 * Agenda
   * Announcement
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''10 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda240321|internal discussion]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * Introduction of new comer
    * KAGRA site report
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * cache file for O3GK and O4a
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
 * Minutes
  * Meeting on Next week will be canceled. Next meeting is 8 May.
  * Report of KIW and open data workshop#7 (Yuzurihara)
  * Computer cluster at Kamioka (Oshino)
   * We purchased the rack. In future, we move the computer in the rack.
  * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
   * Confirmation of the result is on-going.
   * The scale of histogram was changed. The apperance looks consistent with the dedicated summary page and the YamaT-san's [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/binaryRanges_o4a.html|result]].
   * TODO: Inspiral range should be computed from the strain channel, not using the RANGE channel. That Range channel is used for the prompt report.
  * Hveto (Kyujin, Kihyun, Syifa)
   * The analysis result was explained in the meeting.
   * The high pass filter with 10 Hz or 15 Hz was applied for the Omicron analysis. The frequency range for Omicron should be tuned at the same time to mitigate the artificial noise in the Omicron triggers.
   * whale-like shape disappered in the histogram of Omicron triggers when we remove the segment of IPC glitch from the analysis.
   * Is there any suggestion to the interferometer experts? For example, which channels seems problematic.
  * Glitch investigation (Ishikawa)
   * Studying the Omicron pipeline and applying to the KAGRA's O4a data [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15747|Progress report]]
  * Line investigation (Samurai)
   * Reading Fscan paper for past observation run (S6, O1, O2). The report will be done in the future meeting.

-----
=== 20240410 (Wed.) ===
 * Agenda
   * Announcement
    * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 [[https://indico.phys.sinica.edu.tw/event/92/|web]]
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://indico.phys.sinica.edu.tw/event/92/page/220-gravitational-wave-open-data-workshop|web]], [[https://gwosc.org/odw/odw2024/|Info. from GWOSC]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''10 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda240321|internal discussion]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * Introduction of new comer
    * KAGRA site report
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
 * Minutes
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
      * Use segment information of SCIENCE MODE + IPC glitch ==> ongoing
       * ongoing
      * Change data length 4096s -> 64s. Apply the high pass filter before splitting the data. ==> done
      * Estimate common PSD and use it for the analysis ==> done
      * Is it possible to output the trigger list in xml format?
       * https://gwpy.github.io/docs/latest/table/io/#ligo-lw-xml


-----
=== 20240403 (Wed.) ===
 * Agenda
   * Announcement
    * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 [[https://indico.phys.sinica.edu.tw/event/92/|web]]
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://indico.phys.sinica.edu.tw/event/92/page/220-gravitational-wave-open-data-workshop|web]], [[https://gwosc.org/odw/odw2024/|Info. from GWOSC]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''10 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda240321|internal discussion]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * Update of DQSEGDB server [[https://git.ligo.org/computing/helpdesk/-/issues/5672|help ticket]]
    * KAGRA site report
   * Budget request
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
 * Minutes
     * Upgrade DetChar computers (YamaT)
      * waiting the update of workstation machines. I will take a few monthes.
     * DQR update (Yuzurihara)
      * no update.
     * Update contents of summary page (Oshino)
      * no update
     * Hveto (Kyujin)
      * Trouble on KISTI cluster.
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
      * Use segment information of SCIENCE MODE + IPC glitch
      * Change data length 4096s -> 64s. Apply the high pass filter before splitting the data.
      * Estimate common PSD and use it for the analysis
      * Is it possible to output the trigger list in xml format?

-----
=== 20240326 (Wed.) ===
 * Agenda
   * Announcement
    * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 [[https://indico.phys.sinica.edu.tw/event/92/|web]]
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://indico.phys.sinica.edu.tw/event/92/page/220-gravitational-wave-open-data-workshop|web]], [[https://gwosc.org/odw/odw2024/|Info. from GWOSC]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''ER16''': It will nominally start at 1500 UTC (2400 JST) on '''20 Mar 2024''', and last for 2 weeks.
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''3 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda240321|internal discussion]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * KAGRA site report
   * Budget request
   * Progress reports
     * Upgrade DetChar computers (YamaT)
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
 * Minutes
   * Budget request
     * New computers for replacing too old servers (k1det0, 1): 500k-yen x2
     * HDD for new systems: 10k-yen x10-20
   * Progress reports
     * Upgrade DetChar computers (YamaT)
       * Testing DetChar softwares can be started after the update of CDS workstations is completed.
       * Test of CDS workstation needs more time (hopefully by end of April)
     * DQR update (Yuzurihara)
       * No update
     * Update contents of summary page (Oshino)
       * No update
     * Related to segment files (Uchikata, Narikawa)
       * No update
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
       * [[https://www.icrr.u-tokyo.ac.jp/~uchikata/Detchar/O4aSumm/gps/1368975618-1371337218/range/]]
       * SummaryPages process was executed on Kashiwa System-B.
       * Results were copied to the personal region of ICRR's Web server.
       * Finally this page will be opened only for LVK folks(?) on gwdet.
     * pyCBC trigger list for O4a data (Narikawa and Uchikata)
       * No update

-----
=== 20240306 (Wed.) ===
 * Agenda
   * Announcement
    * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 [[https://indico.phys.sinica.edu.tw/event/92/|web]]
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://indico.phys.sinica.edu.tw/event/92/page/220-gravitational-wave-open-data-workshop|web]], [[https://gwosc.org/odw/odw2024/|Info. from GWOSC]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''ER16''': It will nominally start at 1500 UTC (2400 JST) on '''20 Mar 2024''', and last for 2 weeks.
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''3 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda231214#Agenda|internal short announcements (reminders)]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * LVK meeting on March 11-14 at Louisiana State University [[https://www.lsu.edu/physics/lvkmeeting/|web]]
     * There is no fee for online participants
    * Update of member list for DetChar mailing list
    * KAGRA site report
   * Task list for the authorship 2024
   * Progress reports
    * O4a summary page(Uchikata)
     * After several attempts, the job was finished without errors. Another small problems,

-----
=== 20240228 (Wed.) ===
 * Agenda
   * Announcement
    * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 [[https://indico.phys.sinica.edu.tw/event/92/|web]]
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://indico.phys.sinica.edu.tw/event/92/page/220-gravitational-wave-open-data-workshop|web]], [[https://gwosc.org/odw/odw2024/|Info. from GWOSC]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''ER16''': It will nominally start at 1500 UTC (2400 JST) on '''20 Mar 2024''', and last for 2 weeks.
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''3 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda231214#Agenda|internal short announcements (reminders)]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * LVK meeting on March 11-14 at Louisiana State University [[https://www.lsu.edu/physics/lvkmeeting/|web]]
     * Early Registration is open until February 1
     * There is no fee for online participants
    * Update of member list for DetChar mailing list
    * KAGRA site report
   * Task list for the authorship 2024
   * Progress reports

 * Minutes
   * Task list for the authorship 2024 (not fixed yet)
   {{{
1. Commissioning support : serving data monitoring tools for site commissioners.
  This task focuses on the support of the IFO lock trial and/or noise hunting based on the request from the interferometer commissioners.
  Support of analyses to measured data (e.g. noise projection to the DARM with measured noise and TFs) is also contained in this task.
  Specialized tasks for each subgroup should be applied for in the respective group task.

2. Production and validation of Online Data Quality State Vector (for O4b/O5 preparation.
  This task focusing on providing the online DetChar products such as the online DQSV and managing various reliable online flags.
  Developing real-time and guardian codes for providing such flags should be contained in this task.

3. Production and validation of Segment information for O4b/O5 preparation.
  This task focusing on providing low-latency/offline segments.
  Providing segment itself, evaluation of efficient channels to make segments, evaluating benefit of segments on GW searches
  and cooperation with CIT staffs to update segment contents on DQSEGDB are contained in this task.

4. Construction of DQR (Data Quality Report) and igwn-alert framework for O4b/O5 RRT activities.
  This task focusing on providing contents from KAGRA to DQR web pages which is merged with LIGO, Virgo and KAGRA.

5. Support of Data Analysis group to set Data Category criteria for O4b/O5 joint observing run.
  This task focusing on the support of the GW-search activities based on the each WG of DAC.
  Providing data category for the pipelines of each GW sources, providing veto segments
  and other noise information such as identified spectral lines are also contained in this task.

6. Managing DET computers and their environments.
  This task contains the computer environment construction for providing the DetChar products in the cadence of online/low-latency/offline.
  Managing dedicated servers for sharing DetChar products among LVK is also contained in this task.

=====
- Noise hunting in KAGRA commissioning.
    Obsolescent
    Noise *hunting* without IFO (hardware) experts is unrealistic.
    In this meaning, the most of noise *hunting* can be covered in "Commissioning support”.
    If the tasks are related to the noise *finding* for the purpose of providing veto segment,
    they can be covered in “Support of Data Analysis”.
   }}}
     * hveto analysis is contained in 1. in the case that there is some communication with onsite commissioners via klog etc.
       * It's also potentially contained in 5. in the case of providing veto-ed segments, correlated channels etc.
     * Providing Run SummaryPage is contained in 5.
       * Exact sentence as "Making Run Summary" should be added the description in 5.
        
   * Progress reports
     * Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
       * start consideration about the system upgrade to new Debian system.
       * DET tools depend on the CDS tools and CDS tools are well managed on apt-repository.
       * Only a part of CDS tools can be available on Anaconda now.
     * DQR update (Yuzurihara)
     * Update contents of summary page (Oshino)
     * Combine DET computer resources into one DET cluster at Kamioka site
     * Related to segment files (Uchikata, Narikawa)
     * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) [[https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O4a/|O4a (LV)]]

     * pyCBC trigger list for O4a data (Narikawa and Uchikata) [[https://ldas-jobs.ligo-wa.caltech.edu/~detchar/summary/day/20240108/detchar/pycbc_live_medium/| O4a (H1)]]
       * 4000s data analysis is ongoing.
         * Processed time is a few hours
       * Used template is changed from BBH to BNS.
         * Trigger behavior is changed by used templates.
       * Generated triggers are in the text format.
         * If LIGO's XML (LW XML?) is available, it may be very easy to make various plots on SummaryPages.

-----
=== 20240221 (Wed.) ===
 * Agenda
   * Announcement
      * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 [[https://indico.phys.sinica.edu.tw/event/92/|web]]
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://indico.phys.sinica.edu.tw/event/92/page/220-gravitational-wave-open-data-workshop|web]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''ER16''': It will nominally start at 1500 UTC (2400 JST) on '''20 Mar 2024''', and last for 2 weeks.
     * '''O4b''': We plan to commence O4b at 1500 UTC (2400 JST) on '''3 April 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda231214#Agenda|internal short announcements (reminders)]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * LVK meeting on March 11-14 at Louisiana State University [[https://www.lsu.edu/physics/lvkmeeting/|web]]
     * Early Registration is open until February 1
     * There is no fee for online participants
    * Update of member list for DetChar mailing list
    * KAGRA site report (Yuzurihara)
   * Commissioning support + tasks related to O4a
    * O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
    * Event validation (YamaT)
    * Online data quality state vector (YamaT)
Line 23: Line 1159:
    * Scattered light noise (Yamamura)
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28584|Investigation of scattered light noise in O4a]] [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/DAWG/Detchar/klog/klog28584|plots]]
Line 24: Line 1162:
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24303|Comment to Noise budget mode is available on Pastavi]]
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24223|Comment to Noise budget mode is available on Pastavi]]
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24206|Comment to Noise budget mode is available on Pastavi]]
     * [[ https://klog.icrr.u-tokyo.ac.jp/osl/?r=24117|Pastavi update: Updated the table for xml files]]
    * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
    * Hveto related
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24247|Result of Hveto]]
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24218|Checking channel list of Omicron and Hveto]]
    * Proposal of Web App for KAGRA Data Diagnostic (Nakamura)
   * Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
   * DQR update (Yuzurihara)
   * Update contents of summary page (Oshino)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24269|SummaryPage trouble: process was stopped from 3/5 11:45 UTC]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24252|Update Online DQ vector plot on SummaryPage]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24233|SummaryPage trouble: process was stopped from 3/1 21:30 UTC]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24183|SummaryPage trouble: process was stopped from 2/27 2:00 UTC]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24130|Modified guadian state on SummaryPage]]
   * Combine DET computer resources into one DET cluster at Kamioka site
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24204|New DET cluster]]
    * Installed new DET cluster on the Kamioka site. HTCondor is available.
   * Update of `veto definition` / environment on m31 (Uchikata, Narikawa)
   * Script to generate segment files (Uchikata, Narikawa)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24272|Upload modified code to the github]]
 * Minutes


-----
=== 20230301 (Wed.) ===
 * we will skip the meeting

-----
=== 20230222 (Wed.) ===
 * Agenda
   * Announcement
    * LVK meeting : 13 to 16 March 2023 @ Northwestern University, IL, USA [[https://sites.northwestern.edu/lvk2023ciera/|web]]
    * JPS meeting : 22 to 25 March 2023 @ Online style [[https://www.jps.or.jp/activities/meetings/spring/spring_index.php|web]]
    * ICRC2023 (International Cosmic Ray Conference) : 2023/07/26 ~ 2023/08/03 @ Nagoya university, Japan. Registration deadline : 2023/02/20 [[https://www.icrc2023.org/|web]]
     * Yuzurihara will present the status of KAGRA detchar [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14828|abstract]]
    * KAGRA Authorship 2023 Research effort submission
     * see [kagra 05598]
     * deadline : February 22 (Wed.) 17:00 (JST)
    * Release of LIGO's auxiliary data from O3 is now public [[https://www.gw-openscience.org/O3/auxiliary/|web]]
   * KAGRA commissioning reports (Yokozawa) [[KAGRA/Subgroups/DET/Meeting/230222|Commissioning230222]]
   * Commissioning support
    * Investigation of silent run
    * Tool to evaluate Gaussianity (Yamamura)
    * Pastavi update (Yuzurihara)
    * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
    * Proposal of Web App for KAGRA Data Diagnostic (Nakamura)
    * Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
    * Classification of glitch noise (Shikano, Oshino)
    * IPC glitch
    * line noise study (Samurai)
Line 77: Line 1170:
   * Update of `veto definition` / environment on m31 (Uchikata, Narikawa)
   * Script to generate segment files (Uchikata, Narikawa)
   * Related to segment files (Uchikata, Narikawa)
   * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) [[https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O4a/|O4a (LV)]]
   * pyCBC trigger list for O4a data (Narikawa)
Line 80: Line 1174:
   * Commissioning support
    * Investigation of silent run

-----
=== 20240214 (Wed.) ===
 * Agenda
   * Announcement
      * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 [[https://indico.phys.sinica.edu.tw/event/92/|web]]
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://indico.phys.sinica.edu.tw/event/92/page/220-gravitational-wave-open-data-workshop|web]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''ER16''': It will nominally start on '''13 Mar 2024''', and last for 2 weeks. (Note that ER16 will begin in the middle of the next LVK meeting at LSU, 11-14 March.)
     * '''O4b''': We plan to commence O4b at 1600 UTC (2500 JST) on '''27 Mar 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda231214#Agenda|internal short announcements (reminders)]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * White paper and task list for 2024 [[https://git.ligo.org/operations/operations-white-paper-2023|git repo]]
    * LVK meeting on March 11-14 at Louisiana State University [[https://www.lsu.edu/physics/lvkmeeting/|web]]
     * Early Registration is open until February 1
     * There is no fee for online participants
    * Update of member list for DetChar mailing list
    * KAGRA site report (Yuzurihara)
   * Commissioning support + tasks related to O4a
    * O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
    * Event validation (YamaT)
    * Online data quality state vector (YamaT)
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28555|Sanity check of DAC saturation bit provided by a new model]]
Line 83: Line 1197:
     * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14839|poster]] for ICRR internal conference
     * Question : do you include the effect of multiple comparison? ==> not yet
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28568|Investigation of scattered light noise in O4a]]
    * Scattered light noise (Yamamura)
Line 86: Line 1200:
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24078|Pastavi update: Updated the table for xml files]]
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23975|Noise budget mode is available on Pastavi]]
    * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
     * Can we apply the hveto to silent run data on m31? ==> yes
   * Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
    * New served for k1det1 was installed. It is working for running Bruco.
    * The latest result of Bruco is available [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/Bruco/latest/index.html|web]]
   * DQR update (Yuzurihara)
    * The review is on-going. The package to transfer the DQR result is available, we need to test it at KAGRA site.
   * Update contents of summary page (Oshino)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24073|SummaryPage trouble: rerun process was stopped]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24064|Modified plot range of trans IR QPD on SummaryPage]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24063|SummaryPage trouble: process was stopped from 2/20 19:00 UTC]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24042|Modified guadian state on SummaryPage]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=24019|SummaryPage trouble: process was stopped from 2/17 1:30 UTC]]
   * Script to generate segment files (Uchikata, Narikawa)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23992|Changes of setting of crontab at M31]]
    * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14838|slide (Uchikata)]]
    * operation test on m31 was done. From comparison, confirmed the script is running well. Next step is to upload the script to github.
   * others
    * we will skip meeting next week

-----
=== 20230215 (Wed.) ===
 * Agenda
   * Announcement
    * LVK meeting : 13 to 16 March 2023 @ Northwestern University, IL, USA [[https://sites.northwestern.edu/lvk2023ciera/|web]]
    * JPS meeting : 22 to 25 March 2023 @ Online style [[https://www.jps.or.jp/activities/meetings/spring/spring_index.php|web]]
    * ICRC2023 : 2023/07/26 ~ 2023/08/03 @ Nagoya university, Japan. Registration deadline : 2023/02/20 [[https://www.icrc2023.org/|web]]
    * Collecting budget plan for FY2023.
     * mainly for maintenance and repair, slight R&D/preparation for upgrade for O5 and so on.
     * We asked the budget plan for purchase of UPSs and new servers
    * KAGRA Authorship 2023 Research effort submission
     * see [kagra 05598]
     * deadline : February 20 (Mon) 17:00 (JST)
   * KAGRA commissioning reports (Yokozawa) [[KAGRA/Subgroups/DET/Meeting/230215|Commissioning230215]]
   * Commissioning support
    * Investigation of silent run
    * Tool to evaluate Gaussianity (Yamamura)
    * Pastavi update (Yuzurihara)
    * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
    * Proposal of Web App for KAGRA Data Diagnostic (Nakamura)
    * Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
    * Classification of glitch noise (Shikano, Oshino)
    * IPC glitch
    * line noise study (Samurai)
Line 132: Line 1208:
   * Update of `veto definition` / environment on m31 (Uchikata, Narikawa)
   * Script to generate segment files (Uchikata, Narikawa)
   * Related to segment files (Uchikata, Narikawa)
   * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) [[https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O4a/|O4a (LV)]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28538|O4a summary page]]
   * pyCBC trigger list for O4a data (Narikawa)
Line 135: Line 1213:
   * Announcement
    * KAGRA Authorship 2023 Research effort submission
     * see [kagra 05598]
     * deadline : February 20 (Mon) 17:00 (JST)
   * Commissioning support
    * Online data quality state vector (YamaT)
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28555|Sanity check of DAC saturation bit provided by a new model]]
     * We need same test for ETMY model.
    * Scattered light noise (Yamamura)
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28568|Investigation of scattered light noise in O4a]]
     * (oshino) why the double bounce occurred?
     * (yamaT) it's better to check both the feedback and error signal (OUT_DQ and IN1_DQ).
     * (oshino) PD signal might be helpful in the investigation. In POP_FORWARD, the scattered light was seen in the past.
    * Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
     * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15527|KAGRA O4a hveto results (0524 ~ 0606)]] [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15632|KAGRA O4a hveto results (0607 ~ 0619)]]
     * hveto shows the many triggers on the time the scattered light noise appeared
     * (yamaT) IPC glitch was taken care in this analysis? It's better to use SCIENCE segment + IPC glitch segment.
     * It is interesting to compare the glitch rate and the analysis result with and without IPC glitch segments.
     * Yuzurihara shared that segment with Kihyun.
   * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) [[https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O4a/|O4a (LV)]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28538|O4a summary page]]
   * pyCBC trigger list for O4a data (Narikawa)
    * (yamaT) can we include the trigger information by pycbc, in the summary page?

-----
=== 20240207 (Wed.) ===
 * Agenda
   * Announcement
      * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 [[https://indico.phys.sinica.edu.tw/event/92/|web]]
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://indico.phys.sinica.edu.tw/event/92/page/220-gravitational-wave-open-data-workshop|web]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''ER16''': It will nominally start on '''13 Mar 2024''', and last for 2 weeks. (Note that ER16 will begin in the middle of the next LVK meeting at LSU, 11-14 March.)
     * '''O4b''': We plan to commence O4b at 1600 UTC (2500 JST) on '''27 Mar 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda231214#Agenda|internal short announcements (reminders)]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * White paper and task list for 2024 [[https://git.ligo.org/operations/operations-white-paper-2023|git repo]]
    * LVK meeting on March 11-14 at Louisiana State University [[https://www.lsu.edu/physics/lvkmeeting/|web]]
     * Early Registration is open until February 1
     * There is no fee for online participants
    * Update of member list for DetChar mailing list
    * KAGRA site report (Yuzurihara)
   * Commissioning support + tasks related to O4a
    * O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
    * Event validation (YamaT)
    * Online data quality state vector (YamaT)
    * Tool to evaluate Gaussianity (Yamamura)
    * Scattered light noise (Yamamura)
Line 141: Line 1255:
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23966|Noise budget mode is available on Pastavi]]
    * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
     * Favor to analyze the recent KAGRA data (silent run). But, there is an issue around the data transfer. We will talk after the meeting.
    * Proposal of Web App for KAGRA Data Diagnostic (Nakamura)
     * [[attachment:presentation.pdf|slide]]
     * Questions
      * what is the difference from summary page? benefit?
      * can we use jupyter hub?
      * how do you manage authentification?
   * Update contents of summary page (Oshino)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23953|Restart live guardian process]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23917|Update rerun process for summary page]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23899|Comment to Omicron process has been stopped]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23898|Modified SummaryPage configuration file]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23897|Omicron process has been stopped]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23884|Add wind speed and direction plots to SummaryPage]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23883|Modified LSC_LOCK guardian plot on SummaryPage]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23881|Modified VIS guardian plot]]
   * Combine DET computer resources into one DET cluster at Kamioka site
    * asking how to construct the condor cluster to NAOJ engineer
   * Script to generate segment files (Uchikata, Narikawa)
    * test on m31 is on-going. In several day, we will compare the results.
    * (YamaT) no reason to select 15 min. In future, frequency might be reduced.

-----
=== 20230208 (Wed.) ===
 * Agenda
   * Announcement
    * LVK meeting : 13 to 16 March 2023 @ Northwestern University, IL, USA [[https://sites.northwestern.edu/lvk2023ciera/|web]]
    * JPS meeting : 22 to 25 March 2023 @ Online style [[https://www.jps.or.jp/activities/meetings/spring/spring_index.php|web]]
    * ICRC2023 : 2023/07/26 ~ 2023/08/03 @ Nagoya university, Japan. Registration deadline : 2023/02/20 [[https://www.icrc2023.org/|web]]
    * New main data storage server @ Kashiwa (called system-B) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14750|manual]]
     * Mail from Kanda-san : system-A will work about one more year.
    * Collecting budget plan for FY2023.
     * mainly for maintenance and repair, slight R&D/preparation for upgrade for O5 and so on. Is there any request?
   * KAGRA commissioning reports (Yokozawa) [[KAGRA/Subgroups/DET/Meeting/230208|Commissioning230208]]
   * Commissioning support
    * Investigation of silent run
    * Tool to evaluate Gaussianity (Yamamura)
    * Pastavi update (Yuzurihara)
    * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
    * Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
    * Classification of glitch noise (Shikano, Oshino)
    * IPC glitch
    * line noise study (Samurai)
Line 186: Line 1263:
   * Update of `veto definition` / environment on m31 (Uchikata, Narikawa)
   * Script to generate segment files (Uchikata, Narikawa)
   * Related to segment files (Uchikata, Narikawa)
   * Provide the dedicated summary page for O4a of KAGRA (Uchikata) [[https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O4a/|O4a (LV)]]
Line 189: Line 1266:
   * Commissioning support
    * New server arrived at KAGRA site. This will be server dedicated for Bruco (k1det2)
    * Investigation of silent run
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23793|Modification of LSC LOCK Guardian : shorten the iteration to find IR resonance]]
   * Online data quality state vector (YamaT)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28498|model update of k1detdq0]] This is bug fix of production of online data quality state vector related to DAC saturation.
    * The hardware test will be done this week an next week.
   * Tool to evaluate Gaussianity (Yamamura)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28519|Relaunch of GauCh]]
    * The codes were uploaded at [[https://git.ligo.org/yamamura/gauch|git repo]]. The preparation of brief documentation is ongoing.
   * Classification of glitch noise (Shikano, Oshino)
    * They restarted this project. The report will be done soon.
   * Provide the dedicated summary page for O4a of KAGRA (Uchikata) [[https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O4a/|O4a (LV)]]
    * They tested the conda environment and configuration files for the production of the summary page. Except for the specific short time, they can generated the O4a summary page including duty cycle and inspiral range.
   * Generation of trigger list by pycbc (Narikawa)
    * Code test is ongoing by using the short 4096s data of O4a. The timeseries of chi square looks strange. They plan to apply the high pass filter, instead of window function.
    * (yamat) How do you decide clustering length?
    * (Narikawa) By software injection, we can evaluate how the SNR spreads and determine the clustering length.

-----
=== 20240131 (Wed.) ===
 * Agenda
   * Announcement
      * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 [[https://indico.phys.sinica.edu.tw/event/92/|web]]
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://indico.phys.sinica.edu.tw/event/92/page/220-gravitational-wave-open-data-workshop|web]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''ER16''': It will nominally start on '''13 Mar 2024''', and last for 2 weeks. (Note that ER16 will begin in the middle of the next LVK meeting at LSU, 11-14 March.)
     * '''O4b''': We plan to commence O4b at 1600 UTC (2500 JST) on '''27 Mar 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda231214#Agenda|internal short announcements (reminders)]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * White paper and task list for 2024 [[https://git.ligo.org/operations/operations-white-paper-2023|git repo]]
    * LVK meeting on March 11-14 at Louisiana State University [[https://www.lsu.edu/physics/lvkmeeting/|web]]
     * Early Registration is open until February 1
     * There is no fee for online participants
    * Update of member list for DetChar mailing list
    * LVK MoA survey summary [[https://dcc.ligo.org/G2400189|LIGO DCC]]
    * KAGRA site report (Yuzurihara)
   * Commissioning support + tasks related to O4a
    * O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
    * Event validation (YamaT)
Line 194: Line 1302:
     * Preparation of the poster for ICRR internal conference.
   * Update contents of summary page (Oshino)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23810|Add high pass filter to the strain channel on SummaryPage]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23858|Modified LSC_LOCK guardian on SummaryPage]]
   * Script to generate segment files (Uchikata, Narikawa)
    * Test by crontab is on-going at m31. Checking the consistency between summary page and the generated segment files.

-----
=== 20230201 (Wed.) ===
 * Agenda
   * Announcement
    * LVK meeting : 13 to 16 March 2023 @ Northwestern University, IL, USA [[https://sites.northwestern.edu/lvk2023ciera/|web]]
    * JPS meeting : 22 to 25 March 2023 @ Online style [[https://www.jps.or.jp/activities/meetings/spring/spring_index.php|web]]
    * New main data storage server @ Kashiwa (called system-B) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14750|manual]]
     * Yuzurihara will copy the files and directories on detchar account to system-B
     * Mail from Kanda-san : system-A will work about one more year.
    * LIGO-Virgo-KAGRA Town Hall Telecon, Thursday, 26 Jan 2023 [[https://wiki.gw-astronomy.org/OpenLVEM/WebHome#Telecons|wiki]]
   * KAGRA commissioning reports (Yokozawa) [[KAGRA/Subgroups/DET/Meeting/230201|Commissioning230201]]
   * Commissioning support
    * Investigation of silent run
    * Tool to evaluate Gaussianity (Yamamura)
    * Scattered light noise (Yamamura)
Line 216: Line 1304:
    * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)     * Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
    * Classification of glitch noise (Shikano, Oshino)
    * IPC glitch
    * line noise study (Samurai)
Line 221: Line 1312:
   * Update of `veto definition` / environment on m31 (Uchikata, Narikawa)
   * Script to generate segment files (Uchikata, Narikawa)
   * Related to segment files (Uchikata, Narikawa)
   * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) [[https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O4a/|O4a (LV)]]
Line 224: Line 1315:
   * Commissioning support
    * Investigation of silent run
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23767|Summary of silent run during 2022/12/28~2023/01/03]]
     * lock recover time : O3GK 12 min ==> 2023/1 3.5 min (3.4 times faster)
   * Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28392|O4a hveto results]]
   * line noise study (Samurai)
    * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=15613|slide]]
    * Is it possible to set the initial parameter in advance, such as prominence and height?
    * In future, it is better to extend the fft length to be longer for fine frequency resolution.
   * Update contents of summary page (Oshino)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28397|Update configuration file on SummaryPage]]
   * Related to segment files (Uchikata, Narikawa)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28399|Glitch rate for O4a]]
   * provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) [[https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O4a/|O4a (LV)]]
    * The attempt to generate summary page is on system-B. For reading data, NDS2 server is helpful.

-----
=== 20240124 (Wed.) ===
 * Agenda
   * Announcement
      * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://gwosc.org/workshops/|web]]
    * LIGO-Virgo-KAGRA detchar joint meeting
     * tileslot: onthly, 23:00 JST (14:00 UTC) or 6:00 JST (21 UTC)
     * Last meeting on Nov. 15 23:00 JST (14:00 UTC) [[https://wiki.ligo.org/DetChar/Telecon20231115|wiki]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4a''': It will end at 1600 UTC on '''16 Jan 2024'''. LLO will end O4a observing early, at 1400 UTC.
     * '''ER16''': It will nominally start on '''13 Mar 2024''', and last for 2 weeks. (Note that ER16 will begin in the middle of the next LVK meeting at LSU, 11-14 March.)
     * '''O4b''': We plan to commence O4b at 1600 UTC (2500 JST) on '''27 Mar 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda231214#Agenda|internal short announcements (reminders)]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * Information of O4a [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/Observations/O4a|wiki]] page
    * White paper and task list for 2024 [[https://git.ligo.org/operations/operations-white-paper-2023|git repo]]
    * LVK meeting on March 11-14 at Louisiana State University
    * Update of member list for DetChar mailing list
    * KAGRA site report (Yuzurihara)
   * Commissioning support + tasks related to O4a
    * O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
    * Event validation (YamaT)
    * Tool to evaluate Gaussianity (Yamamura)
    * Scattered light noise (Yamamura)
Line 229: Line 1353:
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23696|Pastavi update : added favorite comb of channels]]
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23695|Noise budget mode is available on Pastavi]]
    * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
   * Update of `veto definition` / environment on m31 (Uchikata, Narikawa)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23750|Production of cache(ffl) file for second/minute trend data]]
   * Script to generate segment files (Uchikata, Narikawa)
    * test by crontab is on-going. Some issues remain.

-----
=== 20230125 (Wed.) ===
 * Agenda
   * Announcement
    * LVK meeting : 13 to 16 March 2023 @ Northwestern University, IL, USA [[https://sites.northwestern.edu/lvk2023ciera/|web]]
    * JPS meeting : 22 to 25 March 2023 @ Online style [[https://www.jps.or.jp/activities/meetings/spring/spring_index.php|web]]
    * New main data storage server @ Kashiwa (called system-B) [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14750|manual]]
     * Solved issue to login detchar account
     * We need to move the working place from m31 to system-B. who copy the files?
   * KAGRA commissioning reports (Yokozawa) [[KAGRA/Subgroups/DET/Meeting/230125|Commissioning230125]]
   * Commissioning support
    * Investigation of silent run
    * Tool to evaluate Gaussianity (Yamamura)
    * Pastavi update (Yuzurihara)
    * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
    * Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
    * Classification of glitch noise (Shikano, Oshino)
    * IPC glitch
    * line noise study (Samurai)
     * Peak identifications [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/knownlines_o4a.html|web]]
Line 255: Line 1361:
    * run Omicron at Kamioka site and refresh the Omicron plots on summary page during O4a period
Line 256: Line 1363:
   * Update of `veto definition` / environment on m31 (Uchikata, Narikawa)
Line 258: Line 1364:
   * Related to segment files (Uchikata, Narikawa)
   * provide the dedicated summary page for O4a of KAGRA? [[https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O3a/|O3a (LV)]]
Line 259: Line 1367:
   * Commissioning support
    * Investigation of silent run
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23650|Summary of silent run during 2022/12/28~2023/01/03]]
     * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14756|slide (Yamamura)]]
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23670|Glitch check for the IMC REFL accelerometer at the IMC lock loss]]
    * Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28392|O4a hveto results]]
    * Update contents of summary page (Oshino)
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28390|Modified configuration file on SummaryPage]]

-----
=== 20240117 (Wed.) ===
 * Agenda
   * Announcement
      * KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17
    * Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 [[https://gwosc.org/workshops/|web]]
    * LIGO-Virgo-KAGRA detchar joint meeting
     * tileslot: onthly, 23:00 JST (14:00 UTC) or 6:00 JST (21 UTC)
     * Last meeting on Nov. 15 23:00 JST (14:00 UTC) [[https://wiki.ligo.org/DetChar/Telecon20231115|wiki]]
    * O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
     * '''O4a''': It will end at 1600 UTC on '''16 Jan 2024'''. LLO will end O4a observing early, at 1400 UTC.
     * '''ER16''': It will nominally start on '''13 Mar 2024''', and last for 2 weeks. (Note that ER16 will begin in the middle of the next LVK meeting at LSU, 11-14 March.)
     * '''O4b''': We plan to commence O4b at 1600 UTC (2500 JST) on '''27 Mar 2024'''.
     * Ref.[[https://wiki.ligo.org/Operations/Agenda231214#Agenda|internal short announcements (reminders)]], [[https://observing.docs.ligo.org/plan/|public announcements]]
    * Information of O4a [[https://dac.icrr.u-tokyo.ac.jp/KAGRA/Observations/O4a|wiki]] page
    * White paper and task list for 2024 [[https://git.ligo.org/operations/operations-white-paper-2023|git repo]]
    * LVK meeting on March 11-14 at Louisiana State University
    * KAGRA site report (Yuzurihara)
   * Commissioning support + tasks related to O4a
    * O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
    * Event validation (YamaT)
Line 265: Line 1394:
     * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23665|Development of a tool to evaluate]]
    * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
     * Now analyzing the O3GK data to tune the parameters. After that, can analyze the current KAGRA data.
   * Update contents of summary page (Oshino)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23648|Restart live Omicron process]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23655|Modified plotting range]]
   * Script to generate segment files (Uchikata, Narikawa)
    * Implementations almost finished. Operation test by crontab is on-going.

-----
=== 20230118 (Wed.) ===
 * Agenda
   * Announcement
    * LVK meeting : 13 to 16 March 2023 @ Northwestern University, IL, USA [[https://sites.northwestern.edu/lvk2023ciera/|web]]
    * JPS meeting : 22 to 25 March 2023 @ Online style [[https://www.jps.or.jp/activities/meetings/spring/spring_index.php|web]]
   * KAGRA commissioning reports (Yokozawa) [[KAGRA/Subgroups/DET/Meeting/230118|Commissioning230118]]
    * Scattered light noise (Yamamura)
    * Pastavi update (Yuzurihara)
    * Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
    * Classification of glitch noise (Shikano, Oshino)
    * IPC glitch
    * line noise study (Samurai)
     * Peak identifications [[https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/knownlines_o4a.html|web]]
Line 283: Line 1403:
   * Pastavi update (Yuzurihara)
Line 285: Line 1404:
    * run Omicron at Kamioka site and refresh the Omicron plots on summary page during O4a period
Line 286: Line 1406:
   * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
   * Update of `veto definition` / environment on m31 (Uchikata, Narikawa)
Line 289: Line 1407:
   * Investigation of silent run (Yamamura, Yuzurihara)    * Related to segment files (Uchikata, Narikawa)
   * provide the dedicated summary page for O4a of KAGRA? [[https://ldas-jobs.ligo.caltech.edu/~detchar/summary/O3a/|O3a (LV)]]
Line 291: Line 1410:
   * KAGRA commissioning reports (Yokozawa) [[KAGRA/Subgroups/DET/Meeting/230118|Commissioning230118]]
    * Repair for OMC is planed in the end of Jan.
   * Tool to evaluate Gaussianity (Yamamura)
    * Gauch recently looks not running. There is no html page linked from summary page. We will check the details later.
   * DQR update (Yuzurihara)
    * I asked the remote help to Derek. I'm submitteing the application for the ICRR computer account.
   * IPC glitch
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28025|Summary of recent segment for IPC glitch (2023/11~12)]]
   * Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28194|2023-05-24 ~ 06-07 O4a hveto results]]
    * The analysis for the remained date will be
Line 294: Line 1420:
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23552|Remove several channels from SummaryPage]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23557|SummaryPage trouble: process was stopped from 1/12 12:00 UTC]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23558|Add voltmeter page to SummaryPage]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23559|Modified plots of temperature sensor channels]]
   * Script to generate segment files (Uchikata, Narikawa)
    * Almost finished update of script.
    * There two kinds of scripts. In future, they will be merged.
   * Investigation of silent run (Yamamura, Yuzurihara)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23463|Summary of silent run during 2022/12/28~2023/01/03]]
    * script is re-usable for next silent run / weekend run. upload on gitlab.
    * [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=14756|Presentation slide (Yamamura)]]

-----
=== 20230111 (Wed.) ===
 * Agenda
   * Announcement
    * LVK meeting : 13 to 16 March 2023 @ Northwestern University, IL, USA
    * JPS meeting : 22 to 25 March 2023 @ Online style [[https://www.jps.or.jp/activities/meetings/spring/spring_index.php|web]]
   * KAGRA commissioning reports (Yokozawa) [[KAGRA/Subgroups/DET/Meeting/230111|Commissioning230111]]
   * Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
   * DQR update (Yuzurihara)
   * Pastavi update (Yuzurihara)
   * Update contents of summary page (Oshino)
   * Combine DET computer resources into one DET cluster at Kamioka site
   * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
   * Update of `veto definition` / environment on m31 (Uchikata, Narikawa)
   * Script to generate segment files (Uchikata, Narikawa)
   * Investigation of silent run (Yamamura, Yuzurihara)
 * Minutes
   * KAGRA commissioning reports (Yokozawa)
    * this week, PRFPMI trial is on-going.
    * During end-year and new-year, we had silent run. The summarization is on-going.
   * Pastavi update (Yuzurihara)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23358|Noise budget mode is available on Pastavi]]
   * Update contents of summary page (Oshino)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23364|SummaryPage trouble: process was stopped from 12/5 16:00 UTC]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23471|SummaryPage trouble: process was stopped from 1/5 20:00 UTC]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23459|Bug fix of Hveto script]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23460|Modify All guardian node page]]
   * Noise hunting by machine learning and Hveto (Kyujin/Kihyun)
    * analysis with 500~1000 images of spectrogram is on-going
    * unsupervised analysis didn't work well
    * LIGO's data set is always supervised one
   * Script to generate segment files (Uchikata, Narikawa)
    * error at m31 was fixed by using StateTimeSeries
    * Improvement of usability
     * added option to select the working machine
     * added option to select output directory
   * Investigation of silent run (Yamamura, Yuzurihara)
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=23463|Summary of silent run during 2022/12/28~2023/01/03]]
    * script is re-usable for next silent run / weekend run. upload on gitlab.
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28057|Modified configuration files of SummaryPage]]
    * [[https://klog.icrr.u-tokyo.ac.jp/osl/?r=28247|Modified configuration file on SummaryPage]]
Line 348: Line 1425:
  * [[KAGRA/Subgroups/DET/Meeting/2023|2023]]

Meetings

  • Meeting time: 11:00-11:30 JST/KST on every Wednesday
  • Meeting room: Zoom3


Agenda & Minutes


20241225 (Wed.)

  • Agenda
    • Announcement
      • O4b schedule:
      • Scheduled conference
        • LVK meeting: 2024/03/24-27 @Albert Park, Melbourne, Australia
        • GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront
        • Amaldi & GR: 2024/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

        • ICRC 2025: 2024/07/15-24 @Geneva (Switzerland) web

      • KAGRA site report 11/27

      • An update of the OpsDiv White Paper is underway. The update of the part related to KAGRA DetChar was finished.

      • Selection of KAGRA detchar chair
      • Migration from gw-astronomy (see Takahashi-san's mail) by Dec 18

      • KAGRA Instrument Science White Paper 2024 draft

      • Next meeting:
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • lock loss study in the commissioning (YamaT, Yuzurihara) web

      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Commissioning support
      • Comment to Helper guardian for lockloss check klog

      • lockloss investigartion report klog

    • Pastavi noise budget for the theoretical noise data based on Komori-san's simulation code klog

    • Scattering light noise report (11/26) klog poster


20241204 (Wed.)

  • Agenda
    • Announcement
      • O4b schedule:
      • Scheduled conference
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

        • KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus wiki

        • LVK meeting: 2024/03/24-27 @Albert Park, Melbourne, Australia
        • GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront
        • Amaldi & GR: 2024/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

        • ICRC 2025: 2024/07/15-24 @Geneva (Switzerland) web

      • KAGRA site report 11/27

      • An update of the OpsDiv White Paper is underway. The update of the part related to KAGRA DetChar was finished.

      • Selection of KAGRA detchar chair
      • Migration from gw-astronomy (see Takahashi-san's mail) by Dec 18

      • KAGRA Instrument Science White Paper 2024 draft

      • Next meeting:
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • lock loss study in the commissioning (YamaT, Yuzurihara) web

      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Commissioning support
      • Changed configuration files of DET tools klog

      • DET report on 11/25 klog

    • Pastavi
      • Pastavi update: Noise budget mode came back online klog

    • Update segment lists and cache files during power outage klog


20241127 (Wed.)

  • The meeting was canceled due to the onsite recovery work from the earthquake (11/26 22:47 JST).


20241120 (Wed.)

  • Agenda
    • Announcement
      • O4b schedule:
      • Scheduled conference
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

        • KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus wiki

        • LVK meeting: 2024/03/24-27 @Albert Park, Melbourne, Australia
        • GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront
        • KIW12: 2024/05/26~27 @Shanghai, China
        • Amaldi & GR: 2024/07/14-18 @Scottish Exhibition Centre, Glasgow, UK web

      • KAGRA site report 11/13

      • Update of OpsDiv White Paper is underway. The update of part related to KAGRA DetChar was finished.

      • Selection of KAGRA detchar chair
      • Power outage in Kashiwa campus
        • KAGRA Main Data Server was down. Now the system-B is online.
      • Migration from gw-astronomy (see Takahashi-san's mail) by Dec 18

      • Next meeting: November 27
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • lock loss study in the commissioning (YamaT, Yuzurihara) web

      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes


20241113 (Wed.)

  • Agenda
    • Announcement
      • O4b schedule:
      • Scheduled conference
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

        • KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus wiki

        • GWADW 2025: 2024/05/18~5/23 @the Hilton Cocoa Beach (Florida) Oceanfront
      • KAGRA site report 11/01

      • Update of OpsDiv White Paper is underway. The update of part related to KAGRA DetChar was finished.

      • Selection of KAGRA detchar chair
      • Regeneration of the Aggregated Data Set for KAGRA O4a Period
      • Power outage in Kashiwa campus
        • KAGRA Main Data Server was down. Now the system-B is online.
      • Next meeting: November 20 13:00 JST (usual meeting + presentation by Syifa)
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • lock loss study in the commissioning (YamaT, Yuzurihara) web

      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Commissioning support
      • Labeling the lockloss by the ETMY oplev glitch klog

      • Lockloss during weekend klog

      • Lockloss investigation: 2024/11/04 23:29:09 JST klog

      • Automation of lockloss by ETMY oplev glitch web

    • Summary page
      • Tested new version of SummaryPage on test server klog

      • Restart Omicron process klog

      • Restart Hveto process klog

      • Trial to run the summary page on detchar cluster klog

      • Restart Fscan process klog

      • Is it earsy to treat changing IP address of the computer node? --> Probably easy

    • Line noise investigation
      • Violin modes moving klog

      • Sideband around lines appear klog

      • What is the definition of segment bar? --> K1:GRD-IFO_STATE_N == 100. It's better to use >= 100.

    • Scattered light noise
      • Analysis of the recent commissioning data by Shih-Hong Hsu slide

      • The origin of the scattered light noise was not changed during 10/7 14:00~21:00 UTC, because the frequency was same.
      • Coherence-spectrogram will be new window to investigate the scattered light noise. This time, they checked the coherence between DARM and PRCL and between DARM and MICH.


20241106 (Wed.)

  • Agenda
    • Announcement
      • O4b schedule:
      • Scheduled conference
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

        • KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus
      • KAGRA site report 11/01

      • Update of OpsDiv White Paper is underway.

      • Chair of KAGRA OpsDiv and selection of KAGRA detchar chair

      • Next meeting: November 13
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • lock loss study in the commissioning (YamaT, Yuzurihara) web

      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Commissioning support
      • lockloss investigation: 2024/11/05 09:51~10:46 JST klog

      • lockloss investigation for Unknown Lockloss list (nightly observing) 2024/10/16 22:13:41 JST klog

    • Summary page


20241030 (Wed.)

  • Agenda
    • Announcement
      • O4b schedule:
      • Scheduled conference
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

        • KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus
      • KAGRA site report 10/18

      • Update of OpsDiv White Paper is underway.

      • Next meeting: November 6
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • lock loss study in the commissioning (YamaT, Yuzurihara) web

      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Commissioning support
      • lockloss investigation: 2024/10/29 2024-10-29 08:38:10 JST klog

    • Summary page
      • Tested new version of SummaryPage klog

      • Due to a lack of memory in the computer, the process failed. Except for that, the process seems to be working well.
      • Modified the unit for IMC cavity noise on the SummaryPage klog

    • Pastavi
      • Pastavi update: added the button for channels related to ASC or VIS oplevs klog

    • Update from Kyujin
      • Syifa is preparing the defense of the master thesis. The defense is planned for December 4th.
      • It's better to give a brief presentation on the coming detchar meeting. After the defense, she will give a (poster) presentation at the coming f2f meeting.
    • Related to segment files (Uchikata, Narikawa)
      • They started the preparation of the veto definer file for O4a data, with GuoChin's help.

    • Line noise investigation
      • Takahiro S Yamamoto gave a presentation on the monitor tool development slide memo

      • The next task is to make the monitor to generate the plots and HTML automatically and put the attractive name of the monitor.
    • Scattered light noise
      • Shih-Hong, Hsu gave a presentation on the identification of the frequency. slide

      • When they generate the Q-transform plot, the script can identify the frequency of the scatter object.
      • During 2024/10/07 14:00-21:00, the frequency did not change significantly. The origin of the scattered light noise will be the same.
      • The discussion to have the separate meeting started.


20241023 (Wed.)

  • Agenda
    • Announcement
      • O4b schedule:
      • Scheduled conference
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

        • KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus
      • KAGRA site report 10/18

      • Next meeting: October 30
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • lock loss study in the commissioning (YamaT, Yuzurihara) web

      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Commissioning support
      • Added MICH and PRCL feedback signal on Gauch (non-Gaussian monitor) klog

      • Computation of expected improvement of inspiral range by noise subtraction of violin mode and mitigation of the noise bump klog

    • Summary page update
      • Added "IFO Lock" state to the OMC tabklog

      • Line noise investigation
      • Scattered light noise


20241016 (Wed.)

  • Agenda
    • Announcement
      • O4b schedule:
      • Scheduled conference
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

        • KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus
      • KAGRA site report 10/02

      • Next meeting: October 23
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • lock loss study in the commissioning (YamaT, Yuzurihara) web

      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Commissioning support
      • Scattered light noise 2024/10/07 klog

    • Summary page update
    • Pastavi update: block the comtamination of the artificial signal klog


20241009 (Wed.)

  • Agenda
    • Announcement
      • O4b schedule:
      • Scheduled conference
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

        • KAGRA Face-to-face meeting: 2024/12/16(Mon)-18(Wed) @ICRR, U-Tokyo, Kasiwa campus
      • KAGRA site report 10/02

      • Next meeting: October 16
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • lock loss study in the commissioning (YamaT, Yuzurihara) web

      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Recovery work after Kashiwa cluster maintenance, such as cache file and segment production. (Uchikata) klog

      • Recovery of bruco server from Kashiwa planned power outage(YamaT) klog

      • Recovery of Pastavi from power outage (Yuzurihara) klog

    • Commissioning support
      • Periodic glitches in the IRX QPD (Oshino) klog

      • Checked the laser power of the IRX (Oshino) klog

      • Added DHARD and CHARD control signals plot klog summary page

    • Glitch investigation (Kihyun)
      • Hveto analysis with triggers of SNR >= 8 is underway.

    • Scattered light noise characterization (Hsu Shih-Hong)
      • The origin of the 300 ~ 400 Hz oscillation is different from scattered light noise.
      • For the previous research on scattered light noise, see slide

    • Update of condor on kmst cluster (Chia-Hsuan)
      • He tried to use the condor_valut_storer. However, it required authentification by the administrator to activate the command.


20241002 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Scheduled conference
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

      • KAGRA site report 09/09

      • Next meeting: October 9
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • lock loss study in the commissioning (YamaT, Yuzurihara) web

      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Upgrade DetChar computers (YamaT)

      • Due to Kachiwa maitanance, nds2 is working partially.
    • lock loss study in the commissioning (YamaT, Yuzurihara)
    • Shutdown the Pastavi server for power outage

    • Characterization of relationship between Omicron triggers and inspiral range during O4a (Ishikawa) slide

    • Line investigation (Takahiro.S.Yamamoto) slide

    • Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Recovery work after Kashiwa cluster maintenance, such as cache file and segment production. (Uchikata)
      • Update of the condor in Kashiwa cluster to version 23.0.14
        • This version looks fine for stochastic search (Chia-Hsuan)


20240911 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • LIGO Detector Characterization in the first half of the fourth Observing run arxiv

      • Scheduled conference
        • JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.web

        • LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. web

          • block schedule for the meeting is now ready
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

      • KAGRA site report 09/02

      • Next meeting: October 2. We will skip the meeting on September 18 and 25.
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • lock loss study in the commissioning (YamaT, Yuzurihara)
    • cache file at Kashiwa cluster (Uchikata)
    • Segment reproduction (Uchikata, Narikawa, YamaT, Yuzu)
      • There was a missing period at the Kamioka cluster. While generating the segment at the Kashiwa cluster, we noticed that it's important to use the consistent version of gwpy and python-ligo-xml to upload the segment for DQSEGDB. We found a suitable conda environment at the Kaashiwa cluster. The segment file generated in the Kashiwa cluster looks consistent with the one generated in the Kamioka cluster. The next step is to ask Robert to include the updated segments on DQSEGDB.
    • Line investigation (Takahiro.S.Yamamoto)
      • The script was developed to merge the spreading line noise into one line noise. Although the test script is working well, it requires more time to mature.


20240904 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Scheduled conference
        • JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.web

        • LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. web

          • block schedule for the meeting is now ready
        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

      • KAGRA site report 09/02

      • Next meeting: September 11. We will skip the meeting on September 18 and 25.
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • KAGRA student workshop (Yuzurihara)
      • During the KAGRA student workshop (2024/08/27-29), we visualized the KAGRA data around the trigger time of high chi^2 statistics by using the time-frequency map klog JGWdoc

      • scattered light affects the high SNR? --> Chi^2 can mitigate the effect of the scattered light

      • What about the effect on parameter estimation? --> I'm not sure. The effect can be evaluated by analyzing the data injected with scatter light noise.

        • Providing segment information on the scattered light noise might be helpful. The difficulty is in identifying the time that occurs when the scattered light is present.
        • Chia-Jui-san mentioned the method using the Omicron triggers and Q-transform.
      • (Narikawa) The other trigger list of high SNR was used? --> Not yet, due to the time constraints

    • Update contents of summary page (Oshino)
    • Related to segment files (Uchikata, Narikawa)
      • There was a missing period at the Kamioka cluster. While generating the segment at the Kashiwa cluster, we noticed that it's important to use the consistent version of gwpy and python-ligo-xml to upload the segment for DQSEGDB. We found a suitable conda environment at the Kaashiwa cluster. The segment file generated in the Kashiwa cluster looks consistent with the one generated in the Kamioka cluster.
      • The automatic generation of the cache file sometimes fails at the Kashiwa cluster. We doubt the cause is the cluster setting. We are discussing how to avoid the failure of cache file generations.
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • slide

      • He injected the BNS signal into the data using Bilby and showed the reconstruction result.
      • The duration of the BNS template (fmin=30Hz) is 250s.
    • Line investigation (Takahiro S Yamamoto)
      • He implemented the code to generate the normalized spectrum. By eyeball check, the result looks consistent with the results by YamaT-san.
      • The next step is to fit the line peak using Gaussian or Lorenzian distribution and characterize the line width and stability of the frequency.
      • Clustering might be necessary to merge the broad line noise into one line.
      • Working repo(internal)


20240807 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Request to reduce batch job during 8/27-30 for the Student Workshop (See [kagra 06769])
      • Scheduled conference
        • KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University web

          • Satellite meeting for noise reduction of KAGRA: 2024/08/24 9:00~12:00 web

        • JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.web

        • LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. web

        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

      • KAGRA site report 07/29

      • Next meeting is September 4
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • Although they updated the way of clustering, the basic feature didn't change. slide

    • The usage manual for veto definer was prepared by Uchikata-san usage manual for veto definer

    • Hveto analysis
      • The comparison between Omicron 2.4 and 3.2 was done


20240731 (Wed.)


20240724 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Scheduled conference
        • KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University web

        • JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.web

        • LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. web

        • JGRG33 @Kindai University: 2024/12/02(Mon)~2024/12/6(Fri) web

      • KAGRA site report 07/16

      • Next meeting is 08/07(Wed). Next week, we will have Wide presentation of PhD thesis by Kihyun.
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Add cooler ondotori page (Oshino) klog

    • KAGRA segment file production stopped on 28 June 2024

      • The cause was the stop of cache file at Kamioka computer due to the expire of gps time package.
      • To return to an automated setup, would it be possible to have the incomplete files created in one directory and only moved to their final location after the whole day's segments are finalized?
      • Reduce the cadence of segment production at Kamioka site

    • On this Friday, we shut down the Kamioka computers due to a planned power outage.
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • They are updating the way to cluster the triggers.
    • veto definer (Uchikata)
      • When we make veto definer, we need the segment updated in DQSEGDB. But, currently, the necessary segment was not uploaded on DQSEDB. We will ask Robert to include them soon.
      • Uchikata-san will summarize the procedure at the DAC wiki.
    • Line identification (Takahiro S. Yamamoto)
      • slide

      • By using Fscan, the line noise in O1 data was investigated. Fscan

      • The goal is to obtain the line frequency and the typical width.
      • Investigating the stability of line noise is important. It will be the first task.
    • Stochastic search (Chia-Hsuan)
      • The line list computed from the data with a shorter duration might be important. Currently, we use the line list of 0.001 mHz resolution. The unification between the stochastic analysis and the detchar analysis is necessary.
    • Parameter estimation analysis with KAGRA O4a data (Kobayashi)


20240717 (Wed.)

  • canceled


20240710 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Future meeting
        • JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.web

        • KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University web

        • LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. https://lvkmeeting2024.ifae.es/

      • KAGRA site report 07/02

        • Recovery from the Noto Earthquake Disaster
      • Next meeting is 07/24(Wed).
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Comparison of Hveto results according to Omicron HPF(Kihyun Jung) klog#30318

    • (Yamat) The Summary page needs to be updated. It is now a bottleneck for updating the detchar tools in IGWN conda environment.
    • CBC trigger list for O4a (Uchikata, Narikawa)
      • slide

      • Check the details for large chi^2 /SNR triggers.
      • Generate the lists automatically and upload it to the daily summary page.
      • Extend the analysis to the CBC search.
      • We may need to gate the IPC error segments for the search.
    • O4a event rate by pyCBC search (Narikawa, Uchikata)
      • If configuration is same as Omicron, we can compare the results.
      • How does pycbc treat the time-clustering? --> clustered triggers within 10 seconds.

      • How the clustering length is decided? In Omicron case, the 0.1 clustering length is decided empirically.
    • Hveto analysis (Kiyun)
      • Kiyun agreed with the wide presentation for KAGRA collaborators, which will be an alternative presentation in the f2f meeting.
    • Deep clean(Shu-Wei Yeh)
      • slide

      • They checked the response on the strain at the hardware injection. For these data, they didn't apply the deep clean.
    • Stochastic search (Chia-Hsuan)
      • Yuzurihara shared the procedure to submit the application of the account on the kmst cluster.
      • Detchar member (Uchikata+) will prepare the veto definer for IPC glitches instead of segment file.


20240703 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Power outage of ICRR Kashiwa campus on 2024/09/28(Sat) 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Future meeting
        • JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.web

        • KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University web

        • LVK meeting @Barcelona, Spain: Registration is now open. Sept 23 – 26. https://lvkmeeting2024.ifae.es/

      • Announcements from Operations (Sawada)
      • KAGRA site report 06/18

    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • provide the CAT1 veto-definer file for IPC glitch (Uchikata)
  • Minutes
    • Bruco configuration for MICH (yamaT) klog#30133

      • Bruco server was replaced to new system
    • Inconsistence of number of triggers between Omicron versions klog#30101

      • On LIGO summary page, the old Omicron(>v4.0) seems to run for Hveto analysis.

      • For Hveto at different computers (Kamioka, Kashiwa, KISTI), we should use the Omicron with the consistent versions.
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • They generated the triggers for O4a data. There were no daily fluctuations in the triggers.
      • The comparison between the O4a triggers and triggers computed by the simulated Gaussian noise is underway. The Gaussian data doesn't include the line noise.
    • Report of updating the DeepClean results using training and cleaning times that avoid IPC glitches (Shu-Wei Yeh) slide

      • Subtraction of the 60 Hz line noise and noise monitored by the microphone is underway.
      • They showed some improvement by excluding the data of IPC glitches.
      • (yamaT) How did you confirm the current-voltage monitor can track the line drift? The coherence might not be the evidence for a narrow frequency bin.
      • (yamaT) Acoustic injection test many times, they investigated the coupling functions between sound and DARM.


20240626 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Power outage of ICRR Kashiwa campus on 2024/09/28 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Conference
        • JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.web

        • KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University
      • Announcements from Operations (Sawada)
      • KAGRA site report 06/18

    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
  • Minutes
    • Usage manual was updated for the latest Omicron (v4.1)

      • We compared the number of triggers between different Omicron versions (v4.1 and v3.1) in root/hds5/xml formats.
      • Based on the reply from the developer, the Omicron (v3.1) had the bug. The developer recommends using the latest Omicron for the analysis.
      • Yuzurihara updated usage manual for v4.1 using the hdf5 format.

    • Update for gates found in stochastic search (Chia-Hsuan)
      • The gating with 3.5 s tme window was applied in pygwb when the large transient (IPC glitch) occurred. To mitigate the length losing by gating, it's better to usr the veto-definer.
      • Uchikata-san have an experience on the veto-definer. She will try to prepare it.
      • Currently they analyzed O4a data (L1, H1, K1) on CIT. But, the L1 and H1 data are stored in system-B(kmst2).
    • Trigger generation for O4a data by pycbc (Narikawa)
      • They showed the result of comparing the O4a triggers with the triggers computed by Gaussian noise (~5days). The discussion is underway.
    • Hveto analysis (Syifa)
    • Glitch investigation (Chia-Jui)
      • They explained how to apply the whitening: (1) estimate the ASD from the data of (tc-58)~(tc-2), (2) apply the whitening by using the estimated ASD
      • Based on their request, we shared the list of aux. channel which was used in O4a Hveto analysis in Summary page. git


20240619 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Power outage of ICRR Kashiwa campus on 2024/09/28 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Conference
        • JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.web

        • KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University
      • Announcements from Operations (Sawada)
      • KAGRA site report 06/07

        • new commissioning leader: Takafumi Ushiba
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
  • Minutes
    • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • O4a summary page

      • This task is finished. The summary page is available here.

      • The data set for the inspiral range is also available on system-B.
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • They are working on comparing the effect by changing the segment durations of 256s and 128s.
      • In the future, we will connect the trigger results with the summary page.
      • Currently they produced the triggers by using the template of 1.4-1.4Msun.
    • Glitch classification
      • They showed the summaries of the glitch classification.
      • The glitches located in the upper right on Q-transform might be related to the lockloss.


20240612 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Power outage of ICRR Kashiwa campus on 2024/09/28 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Conference
        • JPS: 2024/09/16(Mon)~09/19 @Hokkaidou univ.web

        • KAGRA f2f meeting: 2024/08/21(Wed)~23(Fri) @Tokyo City University
      • Announcements from Operations (Sawada)
      • KAGRA site report 06/07

    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
  • Minutes
    • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • Computed the inspiral range from the strain channel with gwpy. Basically they used only the data in the science mode.
      • The histogram of the inspiral range changed. We can see the peak on the histogram.
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • They computed the triggers by using pycbc package from the strain data and packed in the xml.
      • The analyzed data include the IPC glitches. But, the chi-square could mitigated the glitch effect.
      • (Yuzu) Did you find the interesting or new triggers? --> no. Data seems stable.

      • (YamaT) Can you compare the trigger histogram with the one from Gaussian noise data? --> not yet. It's possible by replacing the input data with the generated Gaussian noise.

    • Glitch classification (Hsu Shih-Hong)
      • They took the average of the Q-spectrograms for each class. The obvious common features were not observed.
      • They tried to extract the common features on the Q-spectrograms.
      • It's important to take into account of the whitening effect. The whitening in gwpy could make the sharp glitch wider.


20240605 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Next 10yr Task Force Meeting: 2024/06/07 17:00JST, see [kagra 06570]
      • Power outage of ICRR Kashiwa campus on 2024/09/28 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • JPS registration: 2024/5/21~6/5 web

        • Does anyone have a presentation related to DetChar activity?

      • Announcements from Operations (Sawada)
      • KAGRA site report 05/22

    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
    • isotropic stochastic search result (Chia-Hsuan)
  • Minutes
    • In next JPS meeting(Sep.), YamaT plan to talk the detchat topics related to the web service (https://gwdet.icrr.u-tokyo.ac.jp/~controls/misc/html/).

    • Issue of monopolizing the CPU resources of system-B cluster. (this might be the third time in my memory)
      • Yuzurihara contacted the administrators to set some threshold or update the cluster settings so that the job submission system will manage the jobs submitted by many users effectively. Still no response from the administrators.
    • isotropic stochastic search result (Chia-Hsuan) slide

      • They analyzed the O4a KAGRA data with other detectors by using the pygwb pipiline, at CIT cluster.
      • They found the strange peak on the gating length. They shared the list of the gated time. The comparison between the list and the time of IPC glitches will be done soon.
      • They reported the coherence between KAGRA and LIGO (Livingston and Hanford). About the coherence of 960 and 961 Hz, yamaT pointed out that it came from the timing system. We use the same timing system between KAGRA and LIGO. See also alog.

        • AI for detchar: Collect the information of the remaining frequencies with coherence
      • (YamaT) How did you integrate the data for narrow-line analysis? --> all of the science mode

      • How was the gate process applied?
      • What is the good frequency band for the analysis? --> (YamaT) Comments from the calibration side: use 30~1000Hz.

    • Glitch classification (Chia-Jui) slide

      • They reported the glitches detected in O4a data can be classified into several classes by using unsupervised classification.
      • Q-transform plots are available git.

      • Yama-T commented on slack that the glitch effect might be widen by the whitening process.
    • O4a summary page (Uchikata)
      • We have decided to compute the inspiral range without the gwsumm. The computation is on-going.


20240529 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Next 10yr Task Force Meeting: 2024/06/07 17:00JST, see [kagra 06570]
      • Power outage of ICRR Kashiwa campus on 2024/09/28 9:00~18:00 JST. The system-B cluster and Pastevi server will be down.
      • Renewal of the account on KAGRA Main Data System: deadline 2024/05/31
      • JPS registration: 2024/5/21~6/5 web

        • Does anyone have a presentation related to DetChar activity?

      • KAGRA site report 05/22

    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
  • Minutes
    • Glitch analysis (Ishikawa)
      • The Omicron analysis for non-stationary noise around 360 Hz is on-going.
      • There might the 5-minutes fluctuation on the inspiral range. The analysis for other data will be done next.
    • Glitch analysis (Chia-Jui)
      • The Omicron analysis for the science mode excluding the IPC glitch is on-going.
      • (Guo Chin Liu) Do you have a flag to indicate the glitch time? --> Omicron provide the time of the glitch.

      • (Guo Chin Liu) What is the ratio in the science mode?
      • He found several characteristic types of glitches in KAGRA O4a data. For details, see slide.

      • klog

    • Hveto analysis (Syifa)
      • Hveto analysis with high pass filter is on-going.
    • Dedicated O4a summary page (Uchikata)
    • (Sawada) Matlab on the LDAS cluster will stop on the next maintenance day. If you want to use the Matlab on LDAS cluster, please contact with Sawada-san.


20240515 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • KAGRA detchar liaison to CBC group
        • Nami Uchikata as the new liaison between the CBC group and the KAGRA Detchar group.
      • KAGRA site report
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
  • Minutes
    • Update contents of summary page (Oshino)
    • Hveto (Shifa)
      • By changing cutoff frequency of 8 or 12Hz, they checked the Hveto results and found the artificial glitches around 10Hz.
      • When they apply the HPF with 6 Hz or 4 Hz, the artificial glitches around 10Hz disappeared.
      • (YamaT) Do you know the design of HPF (butterworth?)?
      • (Uchikata) Minimum frequency of Hveto should be larger than the cutoff frequency of high pass filter in Omicron.
        • (YamaT) It might make the ripple.
      • (Yuzu) You can analysis the Omicron triggers with the higher cut-off frequency.
    • Glitch analysis (Ishikawa)
      • klog#29454 slide

      • (Chia-Jui) How do you set-up the Omicron configuration files? --> Same as commonly used one.

      • (Chia-Jui) What was the typical SNR of 300-500Hz? --> SNR 6~10? He didn't have a clear answer. He will check it.

    • Glitch analysis (Chir-Jui)
      • Omicron analysis without high pass filter was done.
      • In page 7, there were gaps due to the exceed of threshold of glitch rate. At that time, Omicron failed due to the error.
      • We confirmed the goal of the Detchar activity is to contribute the sensitivity or noise hunting of KAGRA.


20240508 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Introduction of new comer
      • KAGRA site report
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
  • Minutes
    • Omicron triggers at System B (Uchikata) klog

    • Update contents of summary page (Oshino)
    • line identification by fscan for kagra (Takahiro.S.Yamamoto) slide+supplement

      • What is the frequency resolution?
      • Segment duration of 1800 s is a typycal value in continuous wave search? --> yes

      • Is is posible to real-time monitoring of 60 Hz?
      • What is the advantage to used fscan?
      • The result for O4a data is available on the web. Due to computational costs, we didn't use aux. channels.

    • Hveto analysis (Kyujin, Kihyun, Syifa)
      • By adding the high pass filter, the artificial glitches appeared, although there is no such glitches in Uchikata-san's results.
    • Omicron on K1 O4a Data (Chia-Jui) slide

      • They proposed the way to identify the IPC glitches. --> The way to identify the IPC glitches was already established.

      • They found three classes of glitches in KAGRA data.
    • Dedicated summaru page for O4a KAGRA (Uchikata)
      • When we compute the inspiral range by reading the data from NDS server,


20240424 (Wed.)

  • Agenda
    • Announcement
      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Introduction of new comer
      • KAGRA site report
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • cache file for O3GK and O4a
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
  • Minutes
    • Meeting on Next week will be canceled. Next meeting is 8 May.
    • Report of KIW and open data workshop#7 (Yuzurihara)
    • Computer cluster at Kamioka (Oshino)
      • We purchased the rack. In future, we move the computer in the rack.
    • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • Confirmation of the result is on-going.
      • The scale of histogram was changed. The apperance looks consistent with the dedicated summary page and the YamaT-san's result.

      • TODO: Inspiral range should be computed from the strain channel, not using the RANGE channel. That Range channel is used for the prompt report.
    • Hveto (Kyujin, Kihyun, Syifa)
      • The analysis result was explained in the meeting.
      • The high pass filter with 10 Hz or 15 Hz was applied for the Omicron analysis. The frequency range for Omicron should be tuned at the same time to mitigate the artificial noise in the Omicron triggers.
      • whale-like shape disappered in the histogram of Omicron triggers when we remove the segment of IPC glitch from the analysis.
      • Is there any suggestion to the interferometer experts? For example, which channels seems problematic.
    • Glitch investigation (Ishikawa)
      • Studying the Omicron pipeline and applying to the KAGRA's O4a data Progress report

    • Line investigation (Samurai)
      • Reading Fscan paper for past observation run (S6, O1, O2). The report will be done in the future meeting.


20240410 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 web

      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web, Info. from GWOSC

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Introduction of new comer
      • KAGRA site report
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
  • Minutes
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • Use segment information of SCIENCE MODE + IPC glitch ==> ongoing

        • ongoing
      • Change data length 4096s -> 64s. Apply the high pass filter before splitting the data. ==> done

      • Estimate common PSD and use it for the analysis ==> done

      • Is it possible to output the trigger list in xml format?


20240403 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 web

      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web, Info. from GWOSC

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • Update of DQSEGDB server help ticket

      • KAGRA site report
    • Budget request
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
  • Minutes
    • Upgrade DetChar computers (YamaT)

      • waiting the update of workstation machines. I will take a few monthes.
    • DQR update (Yuzurihara)
      • no update.
    • Update contents of summary page (Oshino)
      • no update
    • Hveto (Kyujin)
      • Trouble on KISTI cluster.
    • pyCBC trigger list for O4a data (Narikawa and Uchikata)
      • Use segment information of SCIENCE MODE + IPC glitch
      • Change data length 4096s -> 64s. Apply the high pass filter before splitting the data.

      • Estimate common PSD and use it for the analysis
      • Is it possible to output the trigger list in xml format?


20240326 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 web

      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web, Info. from GWOSC

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
        • ER16: It will nominally start at 1500 UTC (2400 JST) on 20 Mar 2024, and last for 2 weeks.

        • O4b: We plan to commence O4b at 1500 UTC (2400 JST) on 3 April 2024.

        • Ref.internal discussion, public announcements

      • KAGRA site report
    • Budget request
    • Progress reports
      • Upgrade DetChar computers (YamaT)

      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
  • Minutes
    • Budget request
      • New computers for replacing too old servers (k1det0, 1): 500k-yen x2
      • HDD for new systems: 10k-yen x10-20
    • Progress reports
      • Upgrade DetChar computers (YamaT)

        • Testing DetChar softwares can be started after the update of CDS workstations is completed.

        • Test of CDS workstation needs more time (hopefully by end of April)
      • DQR update (Yuzurihara)
        • No update
      • Update contents of summary page (Oshino)
        • No update
      • Related to segment files (Uchikata, Narikawa)
        • No update
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa)
      • pyCBC trigger list for O4a data (Narikawa and Uchikata)
        • No update


20240306 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 web

      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web, Info. from GWOSC

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • LVK meeting on March 11-14 at Louisiana State University web

        • There is no fee for online participants
      • Update of member list for DetChar mailing list

      • KAGRA site report
    • Task list for the authorship 2024
    • Progress reports
      • O4a summary page(Uchikata)
        • After several attempts, the job was finished without errors. Another small problems,


20240228 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 web

      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web, Info. from GWOSC

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • LVK meeting on March 11-14 at Louisiana State University web

        • Early Registration is open until February 1
        • There is no fee for online participants
      • Update of member list for DetChar mailing list

      • KAGRA site report
    • Task list for the authorship 2024
    • Progress reports
  • Minutes
    • Task list for the authorship 2024 (not fixed yet)
      1. Commissioning support : serving data monitoring tools for site commissioners.
        This task focuses on the support of the IFO lock trial and/or noise hunting based on the request from the interferometer commissioners.
        Support of analyses to measured data (e.g. noise projection to the DARM with measured noise and TFs) is also contained in this task.
        Specialized tasks for each subgroup should be applied for in the respective group task.
      
      2. Production and validation of Online Data Quality State Vector (for O4b/O5 preparation.
        This task focusing on providing the online DetChar products such as the online DQSV and managing various reliable online flags.
        Developing real-time and guardian codes for providing such flags should be contained in this task.
      
      3. Production and validation of Segment information for O4b/O5 preparation.
        This task focusing on providing low-latency/offline segments.
        Providing segment itself, evaluation of efficient channels to make segments, evaluating benefit of segments on GW searches
        and cooperation with CIT staffs to update segment contents on DQSEGDB are contained in this task.
      
      4. Construction of DQR (Data Quality Report) and igwn-alert framework for O4b/O5 RRT activities.
        This task focusing on providing contents from KAGRA to DQR web pages which is merged with LIGO, Virgo and KAGRA.
      
      5. Support of Data Analysis group to set Data Category criteria for O4b/O5 joint observing run.
        This task focusing on the support of the GW-search activities based on the each WG of DAC.
        Providing data category for the pipelines of each GW sources, providing veto segments 
        and other noise information such as identified spectral lines are also contained in this task.
      
      6. Managing DET computers and their environments.
        This task contains the computer environment construction for providing the DetChar products in the cadence of online/low-latency/offline.
        Managing dedicated servers for sharing DetChar products among LVK is also contained in this task.
      
      =====
      - Noise hunting in KAGRA commissioning.
          Obsolescent 
          Noise *hunting* without IFO (hardware) experts is unrealistic.
          In this meaning, the most of noise *hunting* can be covered in "Commissioning support”.
          If the tasks are related to the noise *finding* for the purpose of providing veto segment,
          they can be covered in “Support of Data Analysis”.
      • hveto analysis is contained in 1. in the case that there is some communication with onsite commissioners via klog etc.
        • It's also potentially contained in 5. in the case of providing veto-ed segments, correlated channels etc.
      • Providing Run SummaryPage is contained in 5.

        • Exact sentence as "Making Run Summary" should be added the description in 5.
    • Progress reports
      • Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
        • start consideration about the system upgrade to new Debian system.
        • DET tools depend on the CDS tools and CDS tools are well managed on apt-repository.
        • Only a part of CDS tools can be available on Anaconda now.
      • DQR update (Yuzurihara)
      • Update contents of summary page (Oshino)
      • Combine DET computer resources into one DET cluster at Kamioka site
      • Related to segment files (Uchikata, Narikawa)
      • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) O4a (LV)

      • pyCBC trigger list for O4a data (Narikawa and Uchikata) O4a (H1)

        • 4000s data analysis is ongoing.
          • Processed time is a few hours
        • Used template is changed from BBH to BNS.
          • Trigger behavior is changed by used templates.
        • Generated triggers are in the text format.
          • If LIGO's XML (LW XML?) is available, it may be very easy to make various plots on SummaryPages.


20240221 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 web

      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • LVK meeting on March 11-14 at Louisiana State University web

        • Early Registration is open until February 1
        • There is no fee for online participants
      • Update of member list for DetChar mailing list

      • KAGRA site report (Yuzurihara)
    • Commissioning support + tasks related to O4a
      • O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
      • Event validation (YamaT)
      • Online data quality state vector (YamaT)
      • Tool to evaluate Gaussianity (Yamamura)
      • Scattered light noise (Yamamura)
      • Pastavi update (Yuzurihara)
      • Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
      • Classification of glitch noise (Shikano, Oshino)
      • IPC glitch
      • line noise study (Samurai)
    • Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
    • DQR update (Yuzurihara)
    • Update contents of summary page (Oshino)
    • Combine DET computer resources into one DET cluster at Kamioka site
    • Related to segment files (Uchikata, Narikawa)
    • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) O4a (LV)

    • pyCBC trigger list for O4a data (Narikawa)
  • Minutes


20240214 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 web

      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • White paper and task list for 2024 git repo

      • LVK meeting on March 11-14 at Louisiana State University web

        • Early Registration is open until February 1
        • There is no fee for online participants
      • Update of member list for DetChar mailing list

      • KAGRA site report (Yuzurihara)
    • Commissioning support + tasks related to O4a
    • Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
    • DQR update (Yuzurihara)
    • Update contents of summary page (Oshino)
    • Combine DET computer resources into one DET cluster at Kamioka site
    • Related to segment files (Uchikata, Narikawa)
    • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) O4a (LV)

    • pyCBC trigger list for O4a data (Narikawa)
  • Minutes
    • Online data quality state vector (YamaT)
    • Scattered light noise (Yamamura)
      • Investigation of scattered light noise in O4a

      • (oshino) why the double bounce occurred?
      • (yamaT) it's better to check both the feedback and error signal (OUT_DQ and IN1_DQ).
      • (oshino) PD signal might be helpful in the investigation. In POP_FORWARD, the scattered light was seen in the past.
    • Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
      • KAGRA O4a hveto results (0524 ~ 0606) KAGRA O4a hveto results (0607 ~ 0619)

      • hveto shows the many triggers on the time the scattered light noise appeared
      • (yamaT) IPC glitch was taken care in this analysis? It's better to use SCIENCE segment + IPC glitch segment.
      • It is interesting to compare the glitch rate and the analysis result with and without IPC glitch segments.
      • Yuzurihara shared that segment with Kihyun.
    • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) O4a (LV)

    • pyCBC trigger list for O4a data (Narikawa)
      • (yamaT) can we include the trigger information by pycbc, in the summary page?


20240207 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 web

      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • White paper and task list for 2024 git repo

      • LVK meeting on March 11-14 at Louisiana State University web

        • Early Registration is open until February 1
        • There is no fee for online participants
      • Update of member list for DetChar mailing list

      • KAGRA site report (Yuzurihara)
    • Commissioning support + tasks related to O4a
      • O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
      • Event validation (YamaT)
      • Online data quality state vector (YamaT)
      • Tool to evaluate Gaussianity (Yamamura)
      • Scattered light noise (Yamamura)
      • Pastavi update (Yuzurihara)
      • Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
      • Classification of glitch noise (Shikano, Oshino)
      • IPC glitch
      • line noise study (Samurai)
    • Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
    • DQR update (Yuzurihara)
    • Update contents of summary page (Oshino)
    • Combine DET computer resources into one DET cluster at Kamioka site
    • Related to segment files (Uchikata, Narikawa)
    • Provide the dedicated summary page for O4a of KAGRA (Uchikata) O4a (LV)

  • Minutes
    • Online data quality state vector (YamaT)
      • model update of k1detdq0 This is bug fix of production of online data quality state vector related to DAC saturation.

      • The hardware test will be done this week an next week.
    • Tool to evaluate Gaussianity (Yamamura)
    • Classification of glitch noise (Shikano, Oshino)
      • They restarted this project. The report will be done soon.
    • Provide the dedicated summary page for O4a of KAGRA (Uchikata) O4a (LV)

      • They tested the conda environment and configuration files for the production of the summary page. Except for the specific short time, they can generated the O4a summary page including duty cycle and inspiral range.
    • Generation of trigger list by pycbc (Narikawa)
      • Code test is ongoing by using the short 4096s data of O4a. The timeseries of chi square looks strange. They plan to apply the high pass filter, instead of window function.
      • (yamat) How do you decide clustering length?
      • (Narikawa) By software injection, we can evaluate how the SNR spreads and determine the clustering length.


20240131 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17 web

      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
      • White paper and task list for 2024 git repo

      • LVK meeting on March 11-14 at Louisiana State University web

        • Early Registration is open until February 1
        • There is no fee for online participants
      • Update of member list for DetChar mailing list

      • LVK MoA survey summary LIGO DCC

      • KAGRA site report (Yuzurihara)
    • Commissioning support + tasks related to O4a
      • O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
      • Event validation (YamaT)
      • Tool to evaluate Gaussianity (Yamamura)
      • Scattered light noise (Yamamura)
      • Pastavi update (Yuzurihara)
      • Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
      • Classification of glitch noise (Shikano, Oshino)
      • IPC glitch
      • line noise study (Samurai)
    • Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
    • DQR update (Yuzurihara)
    • Update contents of summary page (Oshino)
    • Combine DET computer resources into one DET cluster at Kamioka site
    • Related to segment files (Uchikata, Narikawa)
    • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) O4a (LV)

  • Minutes
    • Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
    • line noise study (Samurai)
      • slide

      • Is it possible to set the initial parameter in advance, such as prominence and height?
      • In future, it is better to extend the fft length to be longer for fine frequency resolution.
    • Update contents of summary page (Oshino)
    • Related to segment files (Uchikata, Narikawa)
    • provide the dedicated summary page for O4a of KAGRA (Uchikata and Narikawa) O4a (LV)

      • The attempt to generate summary page is on system-B. For reading data, NDS2 server is helpful.


20240124 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17
      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web

      • LIGO-Virgo-KAGRA detchar joint meeting
        • tileslot: onthly, 23:00 JST (14:00 UTC) or 6:00 JST (21 UTC)
        • Last meeting on Nov. 15 23:00 JST (14:00 UTC) wiki

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
        • O4a: It will end at 1600 UTC on 16 Jan 2024. LLO will end O4a observing early, at 1400 UTC.

        • ER16: It will nominally start on 13 Mar 2024, and last for 2 weeks. (Note that ER16 will begin in the middle of the next LVK meeting at LSU, 11-14 March.)

        • O4b: We plan to commence O4b at 1600 UTC (2500 JST) on 27 Mar 2024.

        • Ref.internal short announcements (reminders), public announcements

      • Information of O4a wiki page

      • White paper and task list for 2024 git repo

      • LVK meeting on March 11-14 at Louisiana State University
      • Update of member list for DetChar mailing list

      • KAGRA site report (Yuzurihara)
    • Commissioning support + tasks related to O4a
      • O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
      • Event validation (YamaT)
      • Tool to evaluate Gaussianity (Yamamura)
      • Scattered light noise (Yamamura)
      • Pastavi update (Yuzurihara)
      • Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
      • Classification of glitch noise (Shikano, Oshino)
      • IPC glitch
      • line noise study (Samurai)
        • Peak identifications web

    • Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
    • DQR update (Yuzurihara)
    • Update contents of summary page (Oshino)
      • run Omicron at Kamioka site and refresh the Omicron plots on summary page during O4a period
    • Combine DET computer resources into one DET cluster at Kamioka site
    • Script to generate segment files (Uchikata, Narikawa)
    • Related to segment files (Uchikata, Narikawa)
    • provide the dedicated summary page for O4a of KAGRA? O3a (LV)

  • Minutes


20240117 (Wed.)

  • Agenda
    • Announcement
      • KAGRA international workshop (KIW11)@Taiwan: 2023/04/16-17
      • Gravitaional wave open data workshop (GWODW7)@Taiwan: 2023/04/18-20 web

      • LIGO-Virgo-KAGRA detchar joint meeting
        • tileslot: onthly, 23:00 JST (14:00 UTC) or 6:00 JST (21 UTC)
        • Last meeting on Nov. 15 23:00 JST (14:00 UTC) wiki

      • O4a/preO4b(not call it as postO4a)/ER16/O4b schedule:
        • O4a: It will end at 1600 UTC on 16 Jan 2024. LLO will end O4a observing early, at 1400 UTC.

        • ER16: It will nominally start on 13 Mar 2024, and last for 2 weeks. (Note that ER16 will begin in the middle of the next LVK meeting at LSU, 11-14 March.)

        • O4b: We plan to commence O4b at 1600 UTC (2500 JST) on 27 Mar 2024.

        • Ref.internal short announcements (reminders), public announcements

      • Information of O4a wiki page

      • White paper and task list for 2024 git repo

      • LVK meeting on March 11-14 at Louisiana State University
      • KAGRA site report (Yuzurihara)
    • Commissioning support + tasks related to O4a
      • O4a for KAGRA : 2023/05/25 0:00 JST (=2023/05/24 15:00UTC) ~ 2023/06/21 8:00 JST
      • Event validation (YamaT)
      • Tool to evaluate Gaussianity (Yamamura)
      • Scattered light noise (Yamamura)
      • Pastavi update (Yuzurihara)
      • Noise hunting by machine learning and Hveto (Kyujin, Kihyun, Syifa)
      • Classification of glitch noise (Shikano, Oshino)
      • IPC glitch
      • line noise study (Samurai)
        • Peak identifications web

    • Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
    • DQR update (Yuzurihara)
    • Update contents of summary page (Oshino)
      • run Omicron at Kamioka site and refresh the Omicron plots on summary page during O4a period
    • Combine DET computer resources into one DET cluster at Kamioka site
    • Script to generate segment files (Uchikata, Narikawa)
    • Related to segment files (Uchikata, Narikawa)
    • provide the dedicated summary page for O4a of KAGRA? O3a (LV)

  • Minutes


Past meeting

KAGRA/Subgroups/DET/Meeting (last edited 2024-12-25 11:08:07 by HirotakaYuzurihara)