Engineering Run December 2019

Contents

Date

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.

(done)

Check the available locked data
- Summarize the data length
Estimate power spectrum density
- Summarize plots 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)

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)