DQ shifter: Katie Rink

Shadow: Caitlin Rawcliffe

Link to full report: https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20230717

Week's Summary

• Average obs time: 71.9%
• Average range:
  • Before new MICHFF filter (Mon-Wed) - 136.7 Mpc
  • After new MICHFF filter (Fri-Sun) - 142.3 Mpc
• H1:PEM-EX_VMON_ETMX_ESDPOWER48_DQ was most significant Hveto round winner this week.

• Range improved by 5-10 Mpc on average after the new MICHFF filter was installed on Thursday (7/20). (alog 71540, alog 71539)
• Jitter around 120 Hz in DARM decreased throughout the week.
  • Biggest decrease seems to have occurred last week between 7/13 and 7/14.
• A new jitter seems to have appeared on Friday (7/21) around ~16 Hz. Possibly a calibration line.
• Variable noise around 10-60 Hz is still present.
• Line at ~500 Hz present throughout the week, strongest in the mornings.
  • Exception was Saturday (7/23) when the amplitude was varying much more frequently throughout the entire day.
• S230723ac - detected Saturday at 10:18:34 UTC
  • Noise overlap:
    • Acoustic noise in EX & EY - Lines around roughly 15, 18, 19, 23, 30, 48, 51, 62, 68, and 70 Hz
    • ACC noise in Mid-Y beam tube - Lines from ~50-80 Hz