[Oshino, Yuzurihara]

We confirmed the time series data for the times when the K1:IMC-MCE_PIT_OUT_DQ had coincidence with DARM, but could not identify any significant signal.

GPS time

First, we checked time of coincidences from the Hveto results.
This information can be found on the March 1st Hveto page.
We also checked the lock duration during which has enough time.
We selected a GPS time of 1361698037 among the 22 Hz glitch events with large SNR and plotted the trigger information of MCE_PIT for this period(fig1).

Timeseries

Fig.2 shows time series data for 5 seconds before and after this GPS time.
In addition to MCE_PIT, IMC error and feedback, CARM, and IMMT1 TRANS QPD signals are shown.
It is not clear from the time series data whether there are glitches.
So we used Pastavi to look at the whitened time series data.
This link shows whitened time series of each channel.
The glitch is not clear in this graph either.

Spectrogram

Finally, we created a spectrogram of MCE_PIT by Pastavi.
We plotted it with several different parameters of the FFT.
We also plotted the whitened spectrogram and Q-transform.
There is no clear glitch around 22Hz.

We made a spectrogram for the 22Hz glitch at other times with similar results.