Summary: We had single-IFO time so I tested the new inverse actuation filter for PCALX. WP5530 Sudarshan and I believe we tracked down the factor of 2 and sign error from the initial PCALX test, see aLog 22160. We wanted to do this test to confirm that. CBC injections: The waveform file is: https://daqsvn.ligo-la.caltech.edu/svn/injection/hwinj/Details/Inspiral/H1/coherenttest1from15hz_1126257408.out The XML parameter file is: https://daqsvn.ligo-la.caltech.edu/svn/injection/hwinj/Details/Inspiral/h1l1coherenttest1from15hz_1126257408.xml.gz I did three CBC injections. The start times of the injections were: 1128303091.000000000, 1128303224.000000000, and 1128303391.000000000. The command line to do the injections is: ezcawrite H1:CAL-INJ_TINJ_TYPE 1 awgstream H1:CAL-PCALX_SWEPT_SINE_EXC 16384 coherenttest1from15hz_1126257408.out 1.0 -d -d >> 20151006_log_pcal.out awgstream H1:CAL-PCALX_SWEPT_SINE_EXC 16384 coherenttest1from15hz_1126257408.out 1.0 -d -d >> 20151006_log_pcal.out awgstream H1:CAL-PCALX_SWEPT_SINE_EXC 16384 coherenttest1from15hz_1126257408.out 1.0 -d -d >> 20151006_log_pcal.out I have attached the log. I had to change the file extension to be posted to the aLog. DetChar injection: I injected Jordan's waveform file: https://daqsvn.ligo-la.caltech.edu/svn/injection/hwinj/Details/detchar/detchar_03Oct2015_PCAL.txt The start time of the injection is: 1128303531.000000000 The command line to do the injections is: awgstream H1:CAL-PCALX_SWEPT_SINE_EXC 16384 detchar_03Oct2015_PCAL.txt 1.0 -d -d >> 20151006_log_pcal_detchar.out I have attached the log. I had to change the file extension to be posted to the aLog.
Chris Buchanan and Thomas Abbott,
Quick follow-up with omega scans. It looks like most of the power is seen in GDS-CALIB_STRAIN about eight seconds after each listed injection time, consistently for each of these three injections. Doesn't look like there are omicron triggers for these times yet, but omega scans for GDS-CALIB_STRAIN are attached.
Full omega scans generated here:
https://ldas-jobs.ligo.caltech.edu/~christopher.buchanan/Omega/Oct07_PCALX_Inj1/
https://ldas-jobs.ligo.caltech.edu/~christopher.buchanan/Omega/Oct07_PCALX_Inj2/
https://ldas-jobs.ligo.caltech.edu/~christopher.buchanan/Omega/Oct07_PCALX_Inj3/
For complete documentation of the detchar safety injections:
The injections are 12 sine-gaussians, evenly spaced from 30hz to 430hz, 3 seconds apart with a Q of 6. There are three sets with increasing SNR of 25, 50, 100 (intended). However, the SNR is limited by the PCAL acuation range at higher frequencies.
To generate the waveforms I used the script written by Peter Shawhan / Andy located here: https://daqsvn.ligo-la.caltech.edu/websvn/filedetails.php?repname=injection&path=%2Fhwinj%2FDetails%2Fdetchar%2FGenerateSGSequencePCAL.m
I tuned the injections to stay within the PCAL actuation limits referenced in Peter Fritschel's document https://dcc.ligo.org/LIGO-
The intended time (seconds from start time of injections), freqency, snr, and amplitude (in units of strain) for all injections are pasted below:
__time__ __freq__ __SNR__ __AMP__
0.50 30.0 25.0 5.14e-21
3.50 38.2 25.0 4.96e-21
6.50 48.7 25.0 2.15e-21
9.50 62.0 25.0 2.07e-21
12.50 79.0 25.0 1.75e-21
15.50 100.6 25.0 1.78e-21
18.50 128.2 25.0 1.92e-21
21.50 163.3 25.0 2.06e-21
24.50 208.0 25.0 2.39e-21
27.50 265.0 10.0 1.11e-21
30.50 337.6 5.0 8.39e-22
33.50 430.0 5.0 8.51e-22
36.50 30.0 50.0 1.03e-20
39.50 38.2 50.0 9.92e-21
42.50 48.7 50.0 4.31e-21
45.50 62.0 50.0 4.14e-21
48.50 79.0 50.0 3.51e-21
51.50 100.6 50.0 3.55e-21
54.50 128.2 50.0 3.85e-21
57.50 163.3 50.0 4.12e-21
60.50 208.0 50.0 4.77e-21
63.50 265.0 20.0 2.21e-21
66.50 337.6 10.0 1.68e-21
69.50 430.0 10.0 1.7e-21
72.50 30.0 100.0 2.06e-20
75.50 38.2 100.0 1.98e-20
78.50 48.7 100.0 8.62e-21
81.50 62.0 100.0 8.27e-21
84.50 79.0 100.0 7.01e-21
87.50 100.6 100.0 7.1e-21
90.50 128.2 100.0 7.69e-21
93.50 163.3 100.0 8.24e-21
96.50 208.0 100.0 9.54e-21
99.50 265.0 40.0 4.43e-21
102.50 337.6 20.0 3.36e-21
105.50 430.0 20.0 3.4e-21
Here are the SNR of the CBC injections using the daily BBH matching filtering settings: end time SNR chi-squared newSNR 1128303098.986 20.35 32.86 19.86 1128303231.985 22.62 32.73 22.10 1128303398.985 23.25 21.05 23.25 Expected SNR is 18.4. Though a recovered SNR of 20 (about 10% percent difference from 18.4) is comparable to some of the SNR measurements when doing injections with CALCS in aLog 21890. Note this is the same waveform injected here except in aLog 21890 it starts from 30Hz. In both cases the matched filtering starts at 30Hz. The last two have a bit higher SNR though.
I edited Peter S.'s matlab script to check the sign of these PCAL CBC injections. Looks like the have the correct sign. See attached plots. To run code on LHO cluster: eval '/ligotools/bin/use_ligotools' matlab -nosplash -nodisplay -r "checksign; exit" Also in hindsight I should have done a couple CALCS CBC injections just to compare the SNR at the time with the PCAL injections.
gwdetchar-overflow -i H1 -f H1_R -O segments -o overflow --deep 1128303500 1128303651 124
It returns an empty table, so no overflows.
A time-domain check of the recovered strain waveforms is here: https://wiki.ligo.org/Main/HWInjO1CheckSGs. I found that the sign is correct, the amplitude matches within a few percent at most frequencies, and the phases are generally consistent with having a frequency-independent time delay of 3 or 4 samples (about 0.2 ms). Details are on that wiki page.
Thomas Abbot, Chris Buchanan, Chris Biwer
I've taken Thomas/Chris' table of recovered omicron triggers for the PCAL detchar injection and calculated the ratio of expected/recovered SNR and added some comments:
Recovered time time since frequency recovered expected recovered/expected comments
1128303531 (s) (Hz) SNR SNR SNR
1128303531.5156 0.515599966 42.56 34.07 25 1.3628
1128303534.5078 3.5078001022 61.90 39.41 25 1.5764
1128303537.5039 6.5039000511 64.60 28.29 25 1.1316
1128303540.5039 9.5039000511 79.79 23.89 25 0.9556
1128303543.5039 12.5039000511 1978.42 21.38 25 0.8552 suspicious, the frequency is very high
1128303546.502 15.5020000935 144.05 26.24 25 1.0496
1128303549.502 18.5020000935 185.68 26.38 25 1.0552
1128303552.502 21.5020000935 229.34 26.29 25 1.0516
1128303555.501 24.5009999275 918.23 27.34 25 1.0936
1128303558.501 27.5009999275 315.97 11.05 10 1.105
1128303564.5005 33.5004999638 451.89 6.76 5 1.352
1128303567.5156 36.515599966 50.12 68.53 50 1.3706
1128303570.5078 39.5078001022 61.90 78.23 50 1.5646
1128303573.5039 42.5039000511 76.45 52.04 50 1.0408
1128303576.5039 45.5039000511 91.09 48.42 50 0.9684
1128303579.5039 48.5039000511 116.63 47.73 50 0.9546
1128303582.502 51.5020000935 144.05 52.59 50 1.0518
1128303585.502 54.5020000935 177.91 52.3 50 1.046
1128303588.502 57.5020000935 261.81 54.8 50 1.096
1128303591.501 60.5009999275 323.36 55.64 50 1.1128
1128303594.501 63.5009999275 414.01 19.67 20 0.9835
1128303597.501 66.5009999275 390.25 9.55 10 0.955
1128303600.5005 69.5004999638 481.99 9.34 10 0.934
1128303603.5156 72.515599966 48.35 136.81 100 1.3681
1128303606.5078 75.5078001022 71.56 156.91 100 1.5691
1128303609.5039 78.5039000511 76.45 102.72 100 1.0272
1128303612.5039 81.5039000511 138.03 102.85 100 1.0285
1128303615.5039 84.5039000511 134.83 95.52 100 0.9552
1128303618.502 87.5020000935 1283.14 104.17 100 1.0417 frequency seems a bit high
1128303621.502 90.5020000935 211.97 107.18 100 1.0718
1128303624.502 93.5020000935 261.81 104.53 100 1.0453
1128303627.501 96.5009999275 323.36 109.66 100 1.0966
1128303630.501 99.5009999275 414.01 42.15 40 1.05375
1128303633.5005 102.5004999638 959.39 19.11 20 0.9555 this last injection had some kind of glitch on it
In most cases looks like the ratio is within 0.1 of 1. On a quick glance I see 10 injections that were not within this range.