anthony.sanchez@LIGO.ORG - posted 00:01, Friday 18 August 2023 - last comment - 16:26, Friday 18 August 2023(72311)
Thursday Ops day Shift End
TITLE: 08/18 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY:
1:27 UTC PSL Dust monitor alerts going off during high winds again.
3:29UTC random unknown drop out of OBSERVING. I saw no SDF DIFFS within a few seconds of the event and took the IFO back to OBSERVING.
6:42 UTC another random unknown drop out of OBSERVING. I saw no SDF DIFFS within a few seconds of the event and took the IFO back to OBSERVING.
Other than that it' s been a quiet night.
Current LOCK 25 hours!
LOG: Coyotes chewing on sprinkler nossles out back.
The drop out of observing at 3:29 UTC and 6:42 UTC seems due to SDF diff of syscssqz according to the attached DIAG_SDF log. The SQZ TTFSS COMGAIN and FASTGAIN changed at that time, but they are not monitored now (alog72915), so it should be another SDF diff related to the TTFSS change.