At 15:02:30UTC I turned up annular CO2X and CO2X from 1.7W in to ~4W in to see the alignment of the beams, see attached CO2 and compared to IFO beams. The alignment doesn't look bad but we should overlay the images to check. Looked at cold CO2 alignment in 73553.

I turned the CO2s off from 15:07 to 15:09UTC and swapped the masks over, IFO didn't glitch as it did in 73357. We can conclude the glitches were caused by the CO2 beam being quickly blocked rather than any electronics issue.

As in 73357, our DARM high frequency noise changed, plot. Increased with more annular CO2 and then decreased, purple 4.6kHz trace in plot attached, the decrease was more likely due to the TJ's 73683 CARM gain changes than the time with no CO2s.

IFO was in observing when I started (whoops) so we should have been in commissioning 15:02:30UTC to 15:05:00 (Tagging Detchar). I've monitored H1:TCS-ITM{X,Y}_CO2_LASERPOWER_POWER_REQUEST in observe.snap so this doesn't happen again.