LHO DQ summary:

• Excess of glitching starting midday on Jan 06; Andy traced this to the ETMY L2 coil driver, and LHO commissioners power cycled it: alog
  • This glitching may be due sparking associated with very low humidity in the EY VEA.
• RF noise briefly appeared on Jan 05: alog
• 1084 Hz glitches still an issue for the burst search; linked to OMC length noise: alog
• OMC length dither thought to be source of 1084 Hz glitches: alog

Fire alarm follow-up:

• Ed Merilh suggested detchar cut fire alarm out of observing mode data on Jan 05 based on PSL mic: alog. TJ Massinger and Laura Nuttall have generated a DQ flag as suggested and applied it to the CBC search; the burst search will likely follow suit.

For more details, please see the DQ shift pages: 2017Jan02, 2017Jan05