From looking at a few of the loudest Omega scans in the recent lock, i.e. scan 1 and scan 2, I noticed that ASAIR_A_RF45_Q is glitching in a similar way. There's about a one minute period of excess glitching in DARM (first plot). A coherence spectrogram of ASAIR_A_RF45_Q with DARM shows high coherence in the right frequency band, 20 to 500 Hz, only during this time (second plot). There's only excess noise in this AS45Q channel during this time (third plot). There's no excess coherence of MICH, PRCL, or SRCL with DARM during this time (fourth through sixth plots).

I'm not quite sure what this indicates - maybe an excess of junk light, or intensity fluctuations onto the OMC? There's no indication that the coupling to DARM is changing, since the AS45Q channel itself starts glitching at the same time DARM does. We got some loud CBC injections at the start of the lock, so we can hopefully use those to check whether this channel is safe.