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AdV-DAQ (Data Acquisition and Global Control)
verkindt - 15:04 Tuesday 25 July 2017 (38825) Print this report
Comment to Regular spikes in LSC_Acl elapsed time (38077)
Plot1 shows an example of glitches due to the spikes in LSC_ACl_elapsed_time.
The glitch is well visible in the spectrogram of LSC_DARM but not in the spectrogram of Hrec_hoft_20000Hz.
We can see many other glitches in the spectrogram of Hrec_hoft_20000Hz, which are typical low SNR glitches (SNR<8) visible by Omicron with a glitch rate
of about 1 per second. Elapsed_time glitches are a priori less annoying in h(t) than those low SNR glitches.
So, even if such glitches should be investigated and removed, they are not a problem for data analysis.
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