-- KentaroMogushi - 20 Oct 2016

Reproducing DQ shift of LLO though 24th to 27th in Dec in 2015.

Real DQ shift by Shivaraj Kandhasamy


DQ Shifter: Kentaro Mogushi
Email: kentaro.mogushi@ligo.org

Summary Page - LHO / LLO
Alogs - LHO / LLO

Summary Pages by day: Dec 24, Dec 25, Dec 26, Dec 27

Summary

  • duty cycle ~60 Mpc 64.2% for 4 days
  • wind was relatively strong though last 2 days

December 24, 2015

Range, duty cycle, locklosses

Glitches, triggers and other features

  • Omicron - many glithches in the 8 -20 Hz band and at 2.4kHz. The 8 -20 Hz band correlates with roll modes.

December 25, 2015

Range, duty cycle, locklosses

Glitches, triggers and other features

  • PSL Diffracted Power alarms noise coincides with omicron noise 10 Hz in 0-1, 2-3, 17:30 - 18:30 and 22 - 24 UTC band.
  • [https://ldas-jobs.ligo-la.caltech.edu/~detchar/software-saturations/day/20151225/L1-PSL_FSS_DINCO_SERVO-1135036817-86400.png][ PSL-FSS_DINCO_SERVO]] saturated at the third lockloss.
  • BBH/BNS
    • in BBH analysis, there were four SNR (chi-square weighted) > 8
      • SNR 8.380 at 1135096268.390 coincides with PSL-FSS_DINCO_SERVO saturation.
      • SNR 8.295 at 1135088643.506 : whistle
      • SNR 8.107 at 1135096087.156 : whistle
      • SNR 8.036 at 1135080422.229 : whistle
    • in BNS analysis, there was one SNR (chi-square weighted) > 8
      • SNR 8.297 at 1135068302.705 : whistle
  • Hveto
    • The listed below is the top three in Hveto ranking. The plot below shows triggers vetoed after 13 rounds
        1. L1:LSC-PRCL_IN1_DQ
        2. L1:OMC-PZT2_MON_AC_OUT_DQ
        3. L1:ASC-REFL_A_RF9_I_YAW_OUT_DQ
  • Other features
    • ADC/DAC Overflows at 1135044939, 1135066552 and 1135103044

December 26, 2015

Range, duty cycle, locklosses

  • duty cycle ~62 Mpc dcreasing slightly to ~ 60 Mpc, 18.2 hours (~76%) in total.
  • three lock loss, the first one at 10:43 UTCis due to wind LLO wind speed. The second one at 17:57 UTC was due to wind The third one at 20:04UTC was due to wind .

Glitches, triggers and other features

  • omicron : noise seen in suspension bouce/ roll modes at ~22:30 UTC

  • BBH/BNS
    • in BBH, no SNR(chi-square weighted) > 8
    • in BNS, no SNR(chi-square weighted) > 8
  • Hveto
    • The listed below is the top three in Hveto ranking. The plot below shows triggers vetoed after 8 rounds
      1. L1:OMC-PZT2_MON_AC_OUT_DQ
      2. L1:ASC-CHARD_Y_OUT_DQ
      3. L1:ASC-AS_B_RF45_I_PIT_OUT_DQ

  • Other features
    • the channels L1:SUS-ETMY_M0_DAMP_L_IN1_DQ, L1:SUS-ETMY_R0_DAMP_L_IN1_DQ, show strong scattering at ~20:00UTC.
    • L1:SUS-PRM_M1_DAMP_L_IN1_DQ showes show strong scattering at ~18 and ~20:00UTC
  • no ADC/DAC Overflows tab
  • no Software saturations tab

December 27, 2015

Range, duty cycle, locklosses

Glitches, triggers and other features

  • omicron : no glithches
  • BBH/BNS
    • in BBH, no SNR(chi-square weighted) > 8
    • in BNS, no SNR(chi-square weighted) > 8
  • Hveto
  • Other features
    • No software saturations were found
    • All the scattering plot is from 00:00 - ~5:00 UTC
    • ADC/DAC Overflows at 1135210722
Topic revision: r8 - 07 Nov 2016, KentaroMogushi
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