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)
• channel name
  • K1:CAL-CS_PROC_C00_STRAIN_DBL_DQ
• Low latency data channels
  • K1:DCS-CALIB_STRAIN_C10 16384
  • K1:DCS-CALIB_STATE_VECTOR_C10 16
  • K1:DET-DQ_STATE_VECTOR 16
• lock flag
  • What is the definition?
• data quality vector

  • the definition of DQV in full data : definition

  • We cbc group should check the second bit is 1.
  • the definition of DQV in ll_merged data is unknown
• CBC lock segments

  • #	start GPS	stop GPS	duration
    1	xxxx	xxxx	xxxx

Off line analysis

Check point

• Check the available locked data (done)

  • Summarize the data length (done)

• Estimate power spectrum density (done)

  • Summarize information in pdf (done)

• Generate lock list and segment list (done)

• Generate template bank (skipped)

  • How many waveforms we need? (skipped)

• Search signals by matched filter and chi^2 (done)

• Summary the output of search (done)

  • histogram of SNR (done)

  • glitch list(GPS, JST, mass, ISCO frequency, duration) (done)

Output of search

• Summary of locked data CBC locked segment

• Averaged PSD JGWdoc

  • 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 JGWdoc

  • If data is Gaussian, <snr>=1.

• Time series of detection statistics JGWdoc

  • 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

• Online matched filtering
  • July 13, 17:08 - 18:00 JST
  • Using low latency data files (1 sec) dumped from shared memory
  • About 1 minutes deley
  • CH: K1:DCS-CALIB_STRAIN_C10
  • Template: (30,30)Msun, no spin, Waveform: IMRPhenomD
  • Used pre-computed PSD
• Plots

Link

• CBC search in ER1

• ER2 (DetChar)