Engineering Run December 2019

Contents

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.
- #
  
  start GPS
  
  stop GPS
  
  duration

(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)

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)