[Jenne, Oli]
I'm intermittently, while we're locking, seeing some fuzziness on the ETMY oplev (first 2 attachments, with 'fuzzy'). Oli did a brief check, and while they find a different behavior that is present 4 days ago and today (3rd and 4th attachments, with 'drop'), at least a quick glance isn't finding the fuzziness that I'm seeing. We haven't looked at enough past data to say whether this is new, but it doesn't seem to be hindering our ability to lock, so I think we're fine to go forward with ETMX tomorrow.
Capturing my comments in the Mattermost chat in this alog. I think this is OpLev laser glitching. From the DetChar summary page for December 2nd around 1am UTC, clear laser glitching is seen in the SUM spectrogram (1st attachment). These glitches don't always come through in pitch and yaw, but when they do they tend to show in pitch more often than yaw. Looking at the pitch and yaw spectrograms (2nd and 3rd attachments, respectively) at the same time period shows this; clearly seen in pitch, but not so much in yaw (later on seen in both).
