Engineering Run December 2019

• JST: Dec. 17, 2019, 17:00 -- Dec. 24, 2019, 9:00
• GPS:

Data related

• KAGRA full data
  • m31:/data/full : Full KAGRA data
• Low latency data
  • m31:/data/ll_merged/ : Low latency data packed in 4096 seconds
  • hydra:/data/ll_merged/ : Low latency data packed in 4096 seconds
  • hydra: /data/ll-sharing/shm/llhoft/ : Low latency data (1 second) dumped from shared memory (retained only for 8192 seconds)
• h(t) channel name

  • full : K1:CAL-CS_PROC_C00_STRAIN_DBL_DQ

  • ll_merged : K1:DCS-CALIB_STRAIN_C10

• lock flag

  • definition : K1:GRD-LSC_LOCK_STATE_N = 1000

  • Based on this definition, detchar group provides the segment file in m31-01
  • such as /home/detchar/Segments/SegmentList_FPMI_UTC_2019-12-17.txt
• data quality vector

  • channel name : K1:DET-DQ_STATE_VECTOR

  • the definition of DQV in full data : definition

  • the definition of DQV in ll_merged data is same as full data.

• CBC lock segments until 2019/12/18 JST.

  • We checked lock flag of each data and collected the locked data. We considered lock segments by file units for convenience. If compared with https://gwdet.icrr.u-tokyo.ac.jp/~controls/summary/day/20191218/#observing, this lock segment is small slightly.

    #	start GPS	stop GPS	duration
    0	1260604832	1260622368	17536
    1	1260622976	1260649952	26976
    2	1260650400	1260661888	11488
    3	1260662432	1260662752	320
    4	1260668608	1260669600	992
    5	1260669952	1260670272	320
    6	1260671040	1260671456	416
    7	1260673184	1260674656	1472
    8	1260675200	1260682048	6848
    9	1260688800	1260689472	672
    10	1260688800	1260716416	27616

Offline analysis(yuzurihara)

Check point

(done)

• Check the available locked data
  • Summarize the data length
• Estimate power spectrum density
  • Summarize information in pdf
• Generate lock list and segment list
• Generate template bank
  • How many waveforms we need?
• Search signals by matched filter and chi^2
• Summary the output of search
  • histogram of SNR
  • glitch list(GPS, JST, mass, ISCO frequency, duration)

Output of search

• Summary of locked data
• Averaged PSD
  • Power spectrum density (PSD) is averaged over 1 sec chunks by taking median.
• Calculation time to search for signals

  • Read 500 sec data : < 1 min

  • Estimate PSD : 2~3 min.

  • matched filter+chi^2 with single waveform (not bank) : < 1 min

• Histogram of detection statistics

  • If data is Gaussian, <snr>=1.

• Time series of detection statistics
  • waveform : 1.4 - 1.4 Msun
  • Beginning and ending 50 sec data were removed from the result.
  • We uploaded the 3 kinds of time series results which were maximized over rho(matched filter), chi square, rhohat(detection statistics) during 1 second window.
    • We added time series of rho and chi square, because time series of rhohat don't contain the information of the glitch.
  • File names are
    • "cbc_max_rho_ER2.txt" (this data indicates the time when data contains high power)
    • "cbc_max_chi2_ER2.txt" (this data indicates the time when data contains high power in specific frequency band)
    • "cbc_max_rhohat_ER2.txt" (this data indicates the time when data "might" contains gravitational wave signal)

Online analysis

• Plots

Link

• CBC search in ER1

• ER2 (DetChar)

• CBC search in ER2