DQ Shifter: Sudhagar S

Email: sudhagar.suyamprakasam@ligo.org

Fellow(s): Gavin Wallace

Link to DQ Shift: https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20191118

* Summary

• Mean Duty Cycle (85.49% + 66.45% + 79.47% + 83.75% + 89.28% + 86.29% + 83.79% ) / 7 = 82.07%

• Mean BNS Inspiral range ~ 115 Mpc

• PCAL X is not generated on Monday
  • PCAL X shown up broad band variations ~(10 Hz to 1000 Hz) on Wednesday and Thursday.

• Spectra
  • ~2 K Hz line presence on Monday. It disappeared on Tuesday and Wednesday alog=53356
  • Spectra is not available from Thursday on-wards.

• Air compressor noise at 36Hz persists through out the week. alog=53241

• Couple of lock loss due to the Earthquake (Wednesday and Thursday)

• Following noise frequencies shown up this week.
  • ~11 Hz - Monday, Friday and Saturday
  • ~64 Hz - Monday
  • 42 Hz - Friday and Sunday

• H1: ETMX ESD Rack Power: More noisy on many days in a week.

• Violin modes rung up beginning of the lock state