Summary highlights of DQ shift the week from 2024-04-08 to 2024-04-14
The IFO was in observing mode for 74% avg. (lower during the first half of the week and better during the second half)
LHO was observing at a range of 158 Mpc with some dip in range to 134Mpc on the first 2 days of the week (8th and 9th).
For most of the week, whenever the IFO transitioned to observing from a lockloss, the strain h(t) showed noise in the lower frequency regions 10-50Hz and also broadband high frequency noise (above 500Hz) which reduced with time. On some days, these features lasted for more than a couple of hours.
Violin modes at 500Hz and its harmonics were strong at the beginning of observation time after lock loss but dampened after a couple of hours.
Most of the high SNR omicron glitches were centered at ~ 40Hz
The dominant channels in Hveto were usually
H1:PEM-EX_VMON_ETMX_ESDPOWER48_DQ
H1:ASC-CHARD_Y_OUT_DQ
Fscan lines have been on the higher side in the range of 600 to 700 on most days this week.
Full DQ shift report with daily observations can be found in the wiki page here: https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20240408