In general, the features seen during this DQ shift were already known. The IFO behaved as it had in previous days with no unusual issues. The average duty cycle (including the maintenance time) was 61% with some locklosses and difficulty in relocking at various times attributable to earthquakes, high winds, and high microseism.
Lines at about 500 Hz and 2400 Hz (violin modes and butterfly mode respectively) were seen at the beginning of most locks. A line at about 300 Hz was seen on spectrograms with a narrowed (50 Hz to 600 Hz) frequency range.
The 650 Hz wandering line (see alog) was present in locks 1, 2, and 4 on 23 Nov, absent in lock 3 on 23 Nov and during the lock on 24 Nov. It returned in the lock on 24 Nov at a higher frequency of about 670 Hz.
Hveto results were available on 23 Nov and 24 Nov. The channel H1:ASC-X_TR_B_NSUM_OUT_DQ (second round winner on the 23rd and 4th round winner on the 24th) picked up ETMY saturations. Links to the Omega-scans for the loudest events in this class are provided in the complete report. The dominant (1st round winner) channel every day was H1:ASC-MICH_P_OUT_DQ. This channel picked up glitches located at around 5 Hz and unlikely to affect the searches.
Nothing interesting was found in BNS and BBH loudest events.
An excess noise of unknown origin was observed at around 70 Hz. It was strong on 25 Nov but could be seen at various intensitites in the narrowed (50 Hz to 600 Hz) frequency spectrograms back to 5 Nov when that plot first appeared in the Summaray Pages.