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 lock segment(DetChar), 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