Meetings

Meeting time: 13:00-13:30 JST/KST on every Monday
Meeting room: Zoom

Contents

Meetings
1. Agenda & Minutes

Agenda & Minutes

20220627 (Mon.)

Agenda
- Announcement
  - LIGO DetChar F2F is July 18-19 with noise sprint July 20-22. In person + remote style wiki
  - Proposal of KAGRA DetChar f2f meeting. Kashiwa? Kamioka?
  - next KAGRA face-to-face meeting will be held on August 1~3 (hybrid style) web.
- KAGRA commissioning reports (Yokozawa) Commissioning220627
- 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
- Task list for 2022 from Jan 2022 to Dec 2022)
Minutes

20220620 (Mon.)

Agenda
- Announcement
  - LIGO DetChar F2F is July 18-19 with noise sprint July 20-22. In person + remote style wiki
  - Joint LVK DetChar report to the OPsDiv Meeting on 2022/06/16 slide minutes
  - LIGO, VIRGO AND KAGRA OBSERVING RUN PLANS web (15 June 2022 update)
  - next KAGRA face-to-face meeting will be held on August 1~3 (in-person style@U-Tokyo, Hongo campas + online style). The registration will start soon.
- KAGRA commissioning reports (Yokozawa) Commissioning220620
- 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
Minutes
- face-to-face meeting for KAGRA detchar@Kamioka
  - (Yuzurihara) if you have a comment/opinion, please let me know.
- DQR update (Yuzurihara)
  - klog#21190
  - sometimes DQR jobs failed, because the MDC trigger time is earlier than the time the latest frame file was generated.
  - One of solutions is to run DQR at upper stream on DGS network called DMT network.
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
  - no report
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
  - no update

20220613 (Mon.)

Agenda
- Announcement
  - LIGO DetChar F2F is July 18-19 with noise sprint July 20-22. In person + remote style wiki
  - New paper about DQ for pyCBC arXiv
- KAGRA commissioning reports (Yokozawa)
- 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
Minutes
- KAGRA commissioning reports
  - Explained by Yokozawa-san. see KAGRA detector status220613
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
- DQR update (Yuzurihara)
  - Task to compute inspiral range is running on k1det1 klog#20986
- Update contents of summary page? (Oshino)
  - Updated DetChar and VIS tab klog#21060

20220606 (Mon.)

Canceled due to conflict with KIW9

20220530 (Mon.)

Agenda
- Announcement
  - The 9th KAGRA International Workshop (KIW) web (registration by May 31, 2022)
  - JPS meeting : registration by June 2 web
    - Question : Someone should present the status of DetChar and activity toward O4?
  - LIGO DetChar F2F is July 18-19 with noise sprint July 20-22. In person + remote style wiki
  - Final KAGRA report at OpsDiv call was done at May. 26, 2022 slide for May 26
- KAGRA commissioning reports
- 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
Minutes
- KAGRA commissioning reports
  - Pumping down of EY started at 2022 May 24 9:45~ klog#20851
  - Pumping down of IY started at 2022 May 25 9:35~ klog#20874
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
  - hveto worked with omicron triggers generated by a new version of Omicron
    - There seems to be no compatibility between omicron version we use and one in igwn-py39.
    - There may be also no compatibility between SummaryPages we use and omicron in igwn-py39.
    - If so, we need to move igwn-py39 for all tools (SummaryPages, omicron, hveto etc.)
    - SummaryPages in igwn-py39 had worked well in gps mode (reported a few weeks ago).
    - TY want to gather the volunteer to test SummaryPages in daily mode.
  - gwpy can use 'NDSSERVER' environmental variable
    - We don't need to do the code hack for nds2.py in gwpy.
  - (Yuzu) In DAC call, I heard that operation test of gw_data_find is on-going on m31 by Compu&Soft members. It may be available in a few week.
- DQR update (Yuzurihara)
  - I prepared the code of one task to compute inspiral range at the time of GW alert.
  - I send the merge request git repo and will take the review.
- Update contents of summary page? (Oshino)
  - Update SummaryPages web server by YamaT klog#20926

20220523 (Mon.)

Agenda
- Announcement
  - New accounts for accessing LIGO resources (registration by May 22)
  - The 9th KAGRA International Workshop (KIW) web (registration by May 31, 2022)
  - Final KAGRA report at OpsDiv call is planned at May. 26, 2022 slide for Mar 31 slide for Feb 17
  - JPS meeting : registration by June 2 web
- KAGRA commissioning reports
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
Minutes
- KAGRA commissioning reports
  - In-air health check for suspensions (ITMY, ETMY) was by Ushiba and other members.
  - On last Friday, we had the acceptance check to close the chamber for Yarm. It passed.
  - ADC glitch problem on many suspensions by YamaT klog#20815
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
  - hveto itself worked without no additional code hack.
  - Compatible error in trigger file format was occurred
    - The 'peak' columns have incompatible types: ['object', 'float64', 'float64']
    - In TY's remember, Kozakai-san faced and solved same problem...(?)
  - TY want to re-arrange cluttered O3-segments including test ones.
  - (Yuzu) This error is related to klog#19846 ?
- DQR update (Yuzurihara)
  - no update
- Update contents of summary page? (Oshino)
  - Updated VIS page. see klog#20814
- Analysis of transient signals of IMMT1 (Aogaku members)
  - klog#20793

20220516 (Mon.)

Agenda
- Announcement
  - Vigo DetChar paper arXiv
  - The 9th KAGRA International Workshop (KIW) web (registration by May 31, 2022)
  - GWADW2022 web (registration closed)
  - The GRAvitational - wave Science&technology Symposia (GRASS 2022) web (registration closed)
  - (Final) KAGRA report at OpsDiv call is planned at May. 26, 2022 slide for Mar 31 slide for Feb 17
- KAGRA commissioning reports
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
- Report of new tool development? (Darkhan)
- Glitch subtraction survey for O4
  - see mail from Davis Derek (2022 May 3)
  - deadline : May 16
  - The glitch subtraction activities are managed under DET.
  - current summary
Minuts
- Announcement
  - If you talk about DetChar activity, please let chairs know
- KAGRA commissioning reports
  - In-air health check for suspensions (ITMY, ETMY) is on-going by Ushiba klog#20724 klog#20729
  - Turned "ON" two radiation shield coolers for EXC. But, on Sunday, it turned off due to mistake klog#20712 klog#20736
- DQR update (Yuzurihara)
  - Operation test for DQR application is on-going on DetChar dedicated machine
  - From last Wednesday, the alert from MDC stopped (I'm not sure this is scheduled or not...)
    - That is because 1st period of MDC finished
  - The code review will start gradually
  - You can see the summary report of MDC alert on GraceDB
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - FScan cannot find IGWN.
    - YamaT plan to use it which is a part of lalpulsar packages.
  - Trigger files are required for hveto test.
    - YamaT plan to do the consistency check with O3 triggers and the configuration file.
    - Trigger files are on the DET file server and they must be mounted from the test server.
    - Oshino-san will share a past configuration file.
- Update contents of summary page? (Oshino)
  - summary page is working well
- Combine DET computer resources into one DET cluster at Kamioka site
  - no update
- Report of new tool development? (Darkhan)
  - debugging code

20220509 (Mon.)

Agenda
- Announcement
- KAGRA commissioning reports
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
- Report of new tool development? (Darkhan)
- Glitch subtraction survey for O4
  - see mail from Davis Derek (2022 May 3)
  - deadline : May 16
  - The glitch subtraction activities are managed under DET. I would like to ask regular report in DET meeting.
Minuts
- Announcement
- KAGRA commissioning reports
  - ADC noise measurement klog#20658
  - In-air health check for Yarm suspensions (ITMY and ETMY) is on-going.
    - If no problem, review will be done next week and pumping down will start on week of May 23
- DQR update (Yuzurihara)
  - no update
- Report of new tool development? (Darkhan)
  - add channel list?

20220502 (Mon.)

Agenda
- Announcement
- KAGRA commissioning reports
  - PRM cause the glitch in IMMT1 OPLEV signal and POP forword QPD signal klog#20539
  - In-air health check for suspensions (ITMY, ETMY) is on-going by Ushiba klog#20631 klog#20632
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
- Report of new tool development? (Darkhan)
- Data Quality flag for O4a
  - We are asking the concrete requirement for DAC members (CBC, burst, Stochastic)
  - This is related to discuss the ER period and time
- Analysis of TCam photos of ITMY and ETMY with the metal scale by Tcam
Minutes
- Announcement
  - GWADW2022 web
  - The 9th KAGRA International Workshop (KIW) web
  - The GRAvitational - wave Science&technology Symposia (GRASS 2022) web
- DQR update (Yuzurihara)
  - no update.
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - no update
- Update contents of summary page? (Oshino)
  - klog#20634
- Analysis of TCam photos of ITMY and ETMY with the metal scale by Tcam klog#20574
  - analysis is on-going by Aogaku students. Report will appear soon.

20220425 (Mon.)

canceld

20220418 (Mon.)

Agenda
- Announcement
  - monthly maintenance for JGWDoc + JGW wiki + klog on April 18 13:00-16:00 JST.
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
- Report of new tool development? (Darkhan)
Minutes
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - No updates in last week.
  - Some volunteers for testing of hveto, fscan are sitll wanted.
  - We should start to test also iDQ from now on for future observing runs (O5, O6...)
- DQR update (Yuzurihara)
  - operation test for tools is on-going without error and trouble
- Update contents of summary page? (Oshino)
  - no update
- Combine DET computer resources into one DET cluster at Kamioka site
  - no update
- Report of new tool development? (Darkhan)
  - slide
- 120Hz glitches investigation during O3GK
  - configuration file

20220411 (Mon.)

Agenda
- Announcement
  - Workshop 2022/04/15 web page
    - DetChar talk is planed by Yokozawa. When he circulates slide, put comments on slide.
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - call for volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- Exchange of opinions between DET members(YamaT, Sawada(OPS), Yuzurihara) and DMG members(Kanda, Oohara)
- DQR update (Yuzurihara)
- Update contents of summary page? (Oshino)
- Combine DET computer resources into one DET cluster at Kamioka site
  - (Oshino) explain idea, goal, and timeline
- Report of new tool development? (Darkhan)
- Follow-up report of remote contribution from Aoyama Gakuin univ.
Minutes
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - no volunteer yet (Test of hveto and FScan).
    - Coding kagradata.py for the new version of Bruco is ongoing.
    - We need to decide KAGRA common rule about NDS2 and DATAFIND for fixing codes.
  - NAPT test was started for the purpose of saving number of IP address in DGS network.
    - DET gateway (copy of k1gate is enough for the test) will be connected to DGS network.
      - Other nodes will be under DET gateway.
    - It may be better to construct the gateway as Deb10. (Copy of k1gate is Rocky8)
      - TY have no experience of constructing NAPT on Debian.
    - NDS(k1nds[012]), NFS(k1nfs0) services must be available from under DET gateway.
    - How should we do k1det2 which is used for Bruco running from CDS workstation.
- Exchange of opinions between DET members(YamaT, Sawada(OPS), Yuzurihara) and DMG members(Kanda, Oohara)
  - related to conda environment and DQR tasks
  - in Kashiwa server and Kamioka computers, we should have common rule fo NDS2 and DATAFIND, which YamaT already mentioned.
- DQR update (Yuzurihara)
  - the application to connect between igwn-alert and Task Manager was developped by Joe
  - DQRAlert git repo
  - I tried to run this tool in Kamioka computer and it is working well.
  - need to prepare the document of how to use this tool on wiki page.
  - DQR workflow
- Update contents of summary page?
  - no update
- Combine DET computer resources into one DET cluster at Kamioka site
  - goal : prepare job management server and can submit job to k1det[012]
  - timeline : before O4
  - there might be conflict between this cluster and NAPT test. Oshino and YamaT will discuss.
- Follow-up report of remote contribution from Aoyama Gakuin univ.
  - (Yokozawa, Oshino, Yuzurihara) we started the discussion of task list and how to contribute from remote site.

20220404 (Mon.)

Agenda
- Announcement
  - DQR design document, put comments on git issue
  - Workshop 2022/04/15
    - Workshop on the development of innovative tools for new collaborations within gravitational wave detection experiments
  - KAGRA's authorship submission. For details, see [kagra 05009]. Deadline April 8 17:00 JST
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
- DQR update
- Update of summary page
- Trouble of Omicron trigger generation
- 120Hz glitches investigation during O3GK
Minutes
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - Installation of IGWN was done on k1detfs.
    - Too slow HDD response? (~150KB/s via NFS)
  - Works well
    - SummaryPages as GPS-select mode
      - ini-file grammar is slightly changed from the old version.
    - Omicron
      - No special hack
    - Omega-scan
      - needs temporal code hack
    - Bruco
      - needs preparation for reading kagra data (kagradata.py)
      - No --include option in original one.
  - Not yet
    - SummaryPages as Daily mode (This will be done by Kamioka people)
    - hveto
    - FScan
      - Not included in IGWN environment?
  - Problem
    - No global NDS2, DataFind servers or equivalent way.
      - SSH port forwarding is not enough because port number is different depending on person.
      - So I cannot do the code hack on IGWN software in the system region.
    - KAGRA env may not be able to be included in IGWN until O4.
      - If so, we shouldn't use IGWN in officially for O4.
  - (Lupin) igwn-py38? or py39?
  - YamaT asked status of FScan
  - In future, we need to prepare similar environment on Kashiwa cluster. The environment is not completely same as Kamioka computers.
  - We need volunteers from remote site, to test hveto and FScan. Please let us (Yuzuriahra or YamaT) know.
- DQR update (Yuzurihara)
  - Operation test for new version of Task Manager is on-going on k1det1.
  - I found that code of stationary task uses datafind to read gwf data, which we don't have.
  - I need to consider how to read data for DQR tasks.
    - (Darkhan) Is there any way to get the latest list of channels?
    - (Yuzurihara) If you can specify the name of frame data, there is a function on gwpy.
- Update of summary page (Oshino)
  - no update
- Trouble of Omicron trigger generation (Oshino)
  - klog#20328
  - replaced the local SSD on k1sum1. The Omicron triggers are stored in different disk.
- 120Hz glitches investigation during O3GK
  - no update
  - Kihyun can't join for a while. This project will be postponed.
- Report of new tool development (Darkhan)
  - showed demonstration
  - this tool can take a ratio between channels and will be able to apply time-domain filter (band pass/highpass/lowpass) in future.

20220328 (Mon.)

Agenda
- Announcement
  - DQR design document, put comments on git issue
  - Workshop 2022/04/15 Workshop on the development of innovative tools for new collaborations within gravitational wave detection experiments
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
- Activity report by students from Aoyama Gakuin univ.
  - glitch investigation related to IMMT1 oplev (Aoyama Gakuin univ.)
  - Tcam image analysis to identify mirror location and center (Aoyama Gakuin univ.)
- DQR update
- Update of summary page
- 120Hz glitches investigation during O3GK

Minutes
- Unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - YamaT constructed the test environment in local computer
  - Although YamaT is copying the environment to DetChar computers, it is very slow. (speed ~ 250KB/s)
  - After copying, YamaT will work on modification of codes to fit KAGRA data, such as nds2.py
  - For testing the tools (Omicron, Hveto...), we need volunteers, especially remote site!
- Activity report by students from Aoyama Gakuin univ.
  - five students and two staff members from Aoyama Gakuin univ. stayed Kamioka site during last three weeks.
  - They helped commissioning work both in tunnel klog#20124 klog#20155 and in control room.
  - several code developments to understand glitch cause have been done. klog#20026 klog#20027
  - code development to identify mirror center of ITMX have been done by using image analysis. slide(Japanese) klog#20036 klog20198 klog#20203
- DQR update
  - Joe updated Task Manager. Yuzurihara will install new version and test it.
- Update of summary page
  - no update
- 120Hz glitches investigation during O3GK
  - no update

20220307 (Mon.)

Agenda
- announcement
  - LVK meeting March 2022 wiki web
    - registration is available
- 120Hz glitches investigation during O3GK
- unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
- DQ flags for O4
- DQR update
- glitch investigation related to IMMT1 oplev

Minutes
- 120Hz glitches investigation during O3GK
  - no update
- unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012]
  - YamaT is working on this project at test-server.
  - Test of new conda environment will start from next week (after JPS meeting)
- DQ flags for O4
  - no update
- DQR update
  - Joe is developing the code to connect between igwn-alert and TaskManager. It will be available soon.
  - Schedule for review
    - Review of Task Manager will be done before review of each task.
    - High priority task needs to complete before Aug. 2022
    - Low priority task needs to complete before Nov. 2022
- glitch investigation related to IMMT1 oplev
  - From March 8, students from Aoyama Gakuin univ. stayed at Kamioka
  - They worked on the investigation of glitch. klog#20026 klog#20027
  - They checked IMMT1 QPD signals and PRM suspension signals at the time of glitch.
- NDS2 tool development (Darkhan)
  - no major update.
- GPS accuracy monitor (Oshino)
  - is available on summary page
  - Current difference is acceptable and reasonable.
- No meeting on March 21 due to Japanese holiday. Next meeting is planed on March 28.

20220307 (Mon.)

Agenda
- announcement
  - RRT plan during O4 slide
  - LVK meeting March 2022 wiki web
    - registration is available
- 120Hz glitches investigation during O3GK
- unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
- DQ flags for O4
- DQR update
Minutes (Yuzurihara)
- 120Hz glitches investigation during O3GK
  - no update
- unify conda environment in Kamioka detchar computers, k1sum[01] and k1det[012] (YamaT)
  - There are many computers/workstations in Kamioka site or Kamioka control room.
  - Workstations (k1ctr*) use common conda environment by mounting the file server.
  - In DetChar computers k1{sum,det}[01], conda environment should be unified all DetChar resources, similar to workstations.
  - To prevent the trouble that DetChar experts might break the environment, the conda environments will be set as read-only permission.
  - Installation will be done by Kamioka members. After that, we need volunteers to test the DetChar tools on new conda environment.
  - what is the time line?
    - Installation will finished before the end of March. From April, the test will start. Volunteers are helpful.
- DQ flags for O4
  - In last PEM meeting, Yuzurihara presented the current status and received the helpful comments. [slide](https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=13970)
  - We will change our plan to construct the data quality flag and will compute the BLRMS of gwpy to set the threshold.
  - The review is necessary before O4. (probably very close to O4, because we need ER)
- DQR update
  - no update
- Commissioning of GreenX
  - In the last weekend, the commissioner tried continuous GreenX. During that trials, they found many short term lock loss (~10 ms). 10 ms is too short to follow the suspension motion, so it is likely that there are some causes of the lock loss except for the suspension motion.
  - The commissioner needs helps DetChar members to identify the cause or give a hint of the cause.
  - For details, see klog#19963 klog#19983
  - main channel K1:TMS-X_GR_PDA1_OUT_DQ
  - time : 2022 Mar 06 23:37:50 UTC = 2022 Mar 07 8:37:50 JST = GPS time 1330645088

20220228 (Mon.)

Agenda
- 120Hz glitches
- DQ flags for O4
- progress of DQR
- lock loss study of GreenX
Minutes (Yuzurihara)
- accouncement
  - LVK meeting March 2022 wiki web
    - registration is available
    - Wed, 17 March 2021:
      - Plenary Session #1 (09:00-10:30 US/CDT) (=3/16 23:00 JST)
      - Paper Presentation Session #1
      - Plenary Session #2 (16:00-17:30 US/CDT) (=3/17 6:00 JST)
    - Thu, 18 March 2021:
      - Plenary Session #3 (09:00-10:30 US/CDT) (=3/17 23:00 JST)
      - Paper Presentation Session #2
      - Plenary Session #4 (16:00-17:30 US/CDT) (=3/18 6:00 JST)
  - Pastavi server will be unavailable tonight
    - klog#19913
- 120Hz glitches
  - no update
- DQ flags for O4
  - no update
- progress of DQR
  - igwn-alert is running more than 9days and receiving the MDC alert
  - next step is to connect the MDC alert with the launch TaskManager.
  - remained task is to develop InspiralRange issue
- lock loss study of GreenX
  - klog#19906
  - From the Hveto result, the channel (K1:IMC-SERVO_MIXER_DAQ_OUT_DQ) was the most coincident channel with the lock loss of GreenX.
- unify the detchar computing environment (YamaT)
  - scattered codes and applications (Omicron, summary page, ) over Kamioka computers are troubling.
  - we plan to unify the environment by using igwn conda
  - detail will be reported in next meeting
  - (Darkhan) conda environment on k1ctr*. someone accidentally update someone's conda environment. administrator should prepare the conda environment?
  - (YamaT) k1ctr* share the environment. this activity is not related to k1ctr* but k1sum[01], k1det[012]. we should separate the user environment and the environment for the DET tools
  - (Darkhan) should avoid accidental mistake.

20220221 (Mon.)

Agenda
- 120Hz glitches
- DQ flags for O4
- progress of DQR
Minutes
- 120Hz glitches
  - No updates
- DQ flags for O4
  - No updates
- progress of DQR
  - klog#19847
- Proposal new tool to see past data by NDS (Darkhan)

20220207 (Mon.)

Agenda
- 120Hz glitches
- Report from LIGO Detchar F2F Meeting
- DQ flags for O4
- progress of DQR
Minutes
- 120Hz glitches
  - No updates
- DQ flags for O4
  - slide
  - (Yuzurihara) read BLRMS data and made the several plots with 1% and 99% percentile.
  - When KAGRA will be locked as observation mode?
    - hopefully after july, there will be lock trial for two monthes(?)
  - When you set the 1% criteria, always you throw away the 1% data?
    - We might need to consider the better procedure to care that point.
- progress of DQR
  - klog#19671

20220131 (Mon.)

Agenda
- 120Hz glitches
- Report from DQR hackathon
- DQ flags for O4
- Master thesis (Morisue-san)

20220117 (Mon.)

Agenda
- 120Hz glitches
- ITMX glitches
- DQR progress
- DQ flags for O4
Minutes
- 120Hz glitches
  - No updates
  - Next step is coincidence search with signals around ETMY including local control sensors.
- ITMX glitches
  - klog#19212
  - K1:VIS-ITMX_F3_LVDTINF_GAS_{IN1,OUT} have glitches.
  - It seems to occur around AA chassis. (AA and cable replacement didn't help to improve situation).
  - We will try to find glitches on other channels on the same ADC board.
  - This channel should be added to Omicron search on SummaryPages.
- DQR progress
  - JGW-G2213721
- DQ flags for O4
  - No updates
- O3GK paper
  - Threshold used for computing a glitch rate was changed as SNR=6.5.
  - It's a same criterion with LIGO, and Virgo.
  - Both GEO and KAGRA's results are now computed and draft was also updated.

Meetings

Agenda & Minutes

20220627 (Mon.)

20220620 (Mon.)

20220613 (Mon.)

20220606 (Mon.)

20220530 (Mon.)

20220523 (Mon.)

20220516 (Mon.)

20220509 (Mon.)

20220502 (Mon.)

20220425 (Mon.)

20220418 (Mon.)

20220411 (Mon.)

20220404 (Mon.)

20220328 (Mon.)

20220307 (Mon.)

20220307 (Mon.)

20220228 (Mon.)

20220221 (Mon.)

20220207 (Mon.)

20220131 (Mon.)

20220117 (Mon.)

Past meeting