Below is the summary of the LHO DQ shift for the 9 days period of 2024-01-08 to 2024-01-16:

We would like to express our gratitude to the Instrument Team for having a superb detector!

Kudos to Zsuzsa Marka for the patient and expert instructions and Beverly and the DetChar Team for the amazing tool and organization!

End of O4a shift
In observing for the period ~47%. (78.7, 32.3, 6.2, 100, 27, 0, 56, 59.6, 61.3)
Range: generally between 150 and 160 Mpc, quite rugged in the last few days.
Some earthquakes contributed to lock losses, however, intentional lock loss also happened.
Microseism was an issue for a good fraction of the week.
There was one day that was covered by a single continuous lock and another day that had no lock whatsoever.
For the first part of the period the glitchiness had been normal, but for the last few days there had been quite a bit of large glitches in the bucket.
New HVETO channels kept showing up every day, except the last one as compared to the previous period.
Combs, such as 23.8Hz, 29.97Hz, 9.474Hz, 9.475Hz, and 9.48Hz showed up on most days. Line counts below the threshold on all days when data is available.
Some strange behavior on some PEM channels, as posted in daily logs.
Many pyCBC triggers with new SNR > 10 (medium or short) showed up most days; the large glitch rate in the bucket seemed to correlate with how many were there.
The full DQ shift report with day-by-day details is available at:

https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20240108