• Overall locked duty cycle over 7 days: 21%
  • Large chunk was a 15-hour lock Monday and a 6-hour lock Thursday, lots of challenging times later in the week
• Trouble with 4 Hz oscillations saturating an L2 level (some locking at high-noise late in the week due to this)
• Work on scattering off OMC corresponds well to the fact that H1:OMC-ASC_POS_Y_OUT_DQ (and …POS_X…) showed up high on HVETO results most days
• Lots of 10 Hz glitching constantly EXCEPT for the lock from 10:00 – 17:00 UTC on Thursday 3/21 – this segment was so clean of these low frequency glitches that it may be worth looking at what was going on there for clues.  (DetChar call mentioned that these had been coming and going, Omicron plot for this stretch below)
• Plenty of PEM injections, times and alogs noted in my summary list at the DQ Shift Page

DQ Shift Page URL: https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20190318