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Reports until 15:31, Tuesday 18 November 2025
H1 DetChar (DetChar)
Link
emmanuelalejandro.avila@LIGO.ORG -
posted 15:31, Tuesday 18 November 2025
(88163)
Data Quality Shift Report 2025-11-10 to 2025-11-10
Link to report
here
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Summary:
H1 had an average observing duty cycle of 50.37% for the week.
Week started with good conditions for observation, except for some seismic activity which started with an earthquake (Monday)
Strong winds and increasing microseismic noise provoked one day (Friday) of 0% of observation and a lot of glitches the rest of the days .
On Saturday the observation resumed until the end of the week.
For the observing days (Monday, Tuesday, Wednesday, part of Saturday and Sunday), strong winds (still) and high microseismic noise caused locklosses.
We observed persistent violin modes (specifically fundamental at ~500Hz) following lock-losses all week. Weak Bounce/Rolls were not observed.
FScan Plots were available for all the days except Friday. Lowest line count on Thursdat with ~1000 lines and highest on Wednesday with ~3000 lines.
Relevant Round Winners (Hveto only worked on Wednesday, Thursday and Sunday):
H1:PSL-ISS_PDA_REL_OUT_DQ: Winner once (Wednesday).
H1:ASC-DHARD_P_OUT_DQ: Winner once (Thursday).
H1:LSC-PRCL_IN1_DQ: Winner once (Sunday).
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