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Reports until 00:12, Friday 25 August 2023
H1 General
oli.patane@LIGO.ORG - posted 00:12, Friday 25 August 2023 - last comment - 10:16, Friday 25 August 2023(72412)
Ops EVE Shift End

TITLE: 08/25 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 152Mpc
INCOMING OPERATOR: Tony
SHIFT SUMMARY: Detector still Observing and has been Locked for 37hrs 37mins.

Throughout my shift there were a few instances where a GW candidate came in on GraceDB with the EARLY_WARNING tag(but very high FAR), and then possible subthreshold GRB candidates that came in closely after would cause Verbals to announce them.

Also, around 8/25 4:36ish UTC, I noticed that the lock clock said to stand down, but there had been no alert on Verbals, and going to GraceDB, there hadn't been any GRB events in the previous couple of hours.

 

23:00UTC Detector in Observing and Locked for 29.5 hours

23:19 SubGRBTargeted on Verbals E432118
23:22 SubGRBTargeted on Verbals E432119
     - A bunch more SubGRBTargeted on verbals, along with some getting repeated alerts a few minutes later

23:24 Earthquake mode activated for earthquake from Japan (and from off Oregon Coast)
23:24 Back to CALM

23:39 Earthquake mode activated from another earthquake from off the coast of Oregon
23:49 Back to CALM

4:36ish - 4:43UTC lock clock says to Stand Down


LOG:

no log

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genevieve.connolly@LIGO.ORG - 10:16, Friday 25 August 2023 (72417)

Around the same time as the lock clock saying to Stand Down, the summary pages report an increase in SNR ≥5 glitches in the 10 Hz - 5 kHz range.

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