lucy.thomas@LIGO.ORG - posted 12:16, Monday 13 November 2023 (74179)
Data Quality Shift Report 2023-11-06 to 2023-11-12
Summary of the report:
- H1 was observing for 61.5% of this week
- High winds had an impact on sensitivity and glitch rates late on Monday, throughout day Tuesday, beginning of Wednesday, Saturday and beginning of Sunday
- Also earthquakes caused lock loss and increased glitch rates on Wednesday and Friday
- Fscan plots appeared every day, and lines count were within normal every day except Tuesday when they were significantly below mean - stdddev, although only observing for 25% of the day
- Hveto shows trend of ASC winning channels for hard pitch modes cropping up more frequently than in previous weeks, specifically H1:ASC-CHARD_P_OUT_DQ in round 1 and H1:ASC-DHARD_Y_OUT_DQ in round 2 on Tuesday, H1:ASC-CHARD_Y_OUT_DQ in round 2 Wednesday, H1:ASC-CHARD_Y_OUT_DQ round 3 winner on Saturday and H1:ASC-DHARD_P_OUT_DQ round 2 winner on Sunday
- Thursday 18:05UTC after lock regain noticeable high frequency noise related to SQZ angle changing after lock (related aLOG), simliar behaviour on Sunday until 07:00UTC resulted in elevated high frequency noise (related aLOG)
- Thursday relative power of tooth of 22.22192;11.111Hz comb much higher than on previous and subsequent days where it was not visible