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