DQ Shifter: Yanyan Zheng
Fellow(s):Dripta Bhattacharjee

• The average duty factor is (87.7+49.9+72.6+75.2+87.6+99.9+74.6+77.8+55.8)%/9=75.67%
  • Lockloss:2+3+2+3+2+1+3+1=17
• The average BNS range is ~110Mpc.
• Noise:
  • 48Hz noise line can be seen on Monday, Tuesday, Wendesday.
  • Excess noise with ~20-60Hz were presented on Monday, Tuesday, Wednesday, Thursday,Friday and Tuesday(Oct 1st). They might come from the earthquake/accoustic/wind.
  • High frequency noise line at 2000Hz occurred on Monday.
  • Violin modes at 500Hz and 1000Hz can be seen for several hours everyday.
• Dechar
  • Hveto: H1:LSC-POP_A_LF_OUT_DQ is the always the 1st round winner except on Wednesday and Tuesday(Oct 1st).
  • On Wednesday, the 1st round winner: H1:PEM-CS_RADIO_LVEA_NARROWBAND_2_DQ and PEM channels won in the first 6 rounds.
  • On Tuesday(Oct 1st),1st round winner is H1:ASC-AS_A_RF45_Q_YAW_OUT_DQ. This channel picked more of the loud noise.
  • On Friday, the winners from round 2 to 6 are related to the ASC channel. And they picked more of the excess noise.
• Calibration lines: On Monday, Pcal X at high frequency looked different. Otherwise,pcal X and pcal Y looked normal.
• Spectral lines: No plots can be seen on Tuesday(Sep 24th). For Semilog ratio, It looked different from Thursday(Sep 26th).

More details can be seen at https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20190923.