= Engineering Run December 2019 =

Engineering Run 3

Date

• JST time : Dec. 17, 2019, 17:00 -- Dec. 24, 2019, 9:00
• GPS : 1260604818 -- 1261180818

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.

• index	start GPS	stop GPS	duration	comment
  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	1260752128	1260752864	736	we can observe strong peak around 40 Hz
  11	1260754720	1260755424	704
  12	1260757216	1260759744	2528
  13	1260760480	1260762240	1760
  14	1260762688	1260771776	9088
  15	1260774656	1260788224	13568
  16	1260790496	1260792032	1536
  17	1260792672	1260796096	3424
  18	1260796704	1260809600	12896
  19	1260810080	1260820480	10400
  20	1260820960	1260821248	288
  21	1260822368	1260823552	1184
  22	1260824032	1260830496	6464
  23	1260830976	1260842432	11456
  24	1260842912	1260843360	448
  25	1260844000	1260846080	2080
  26	1260848448	1260878176	29728
  27	1260879616	1260889216	9600

Offline analysis(yuzurihara)

Check point

(done)

• Check the available locked data (done)

  • Summarize the data length (done)

• Estimate power spectrum density
  • Summarize plots in pdf

• Generate lock list and segment list (done)

• 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 sec

  • 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