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Lock times: (ODC-MASTER_OBS_INTENT & DMT-DC_READOUT_LOCKED)

1114582937 1114624965 (42028s)
1114629970 1114639925 (9955s)
1114643198 1114646416 (3218s)

There were three locks on 2nd May for ~10.5hrs , ~2 hrs and 3hrs (continued to 3rd May) respectively.

The first lock loss happen after turning on 504.8 Hz Violin mode damping loop (alog). Not sure about the second one (Nutsinee was guessing that the initial alignment was not done for the full day so may be the optics started drifting), but the third lock was lost because PSL tripped (alog).

The first lock had stable inspiral range of ~8MPC while the second had slightly better range ~10MPC.

Three dips in the inspiral range of the first lock were caused by three loud glitches. (Glitch follow up).

OAF and GDS h(t) calibration still differ between 20Hz and 110Hz (and a bit above 2kHz).

There were few interesting glitch bands: 10 to 40Hz starting from 12:30UTC. , 80-300Hz through out the locks. Most of the loud glitches were seen around this frequency band.

Both UPV and Hveto have found H1:ASC-AS_A_RF45_Q_PIT_OUT_DQ to be the most effective veto channel.

10-40Hz glitches might be related to angular sensing and control channels and output mode cleaner angular channels.  STAMP-PEM has shown that OMC-ASC_QPD_B_PIT_OUT, OMC-ASC_ANG_Y_OUT, ASC-AS_{A,B}_RF45_Q_PIT_OUT channels have high coherence with DARM in 10-40Hz frequency band which started after 12p.m. Might be the cause of excess low frequency glitches starting from 12:30p.m.

Daily CBC result has an interesting vertical band of glitches around 12 to 12:30UTC. It looks like a messy PSD estimation, but the timing is not  convincing that it's involved with the noise floor jump  which seems to be closer to 12:50 UTC.