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Reports until 18:01, Friday 11 August 2017
H1 SUS
cheryl.vorvick@LIGO.ORG - posted 18:01, Friday 11 August 2017 (38143)
ETM changes for 3 Earthquakes

Data for ETMX and ETMY for 3 EQs:

I've included drive signals, sensors (osems), and then subtracted the drive signals from the sensor (osem) signals (on speculation, no claim this is completely valid, outside of M0), with some interesting results.

There are a number of sensors that have large changes compared to the other osems around them, and some that are large in both sensors and sensors-drives. 

This leads me to believe that further investigation into these osems may be warented.

All values the change from before to after the earthquakes, and all comments are regarding EQ2 only.

    osems osems - drive
ETMX M0  RT: large change  RT: large change
  L1 LL, UR: large change all osems: no remarkable changes
  L2 UL, UR: large changes all osems: inconsistent changes
ETMY M0 RT: large change RT: large change
  M0 SD: nothing remarkable SD: large change
  L1 LL: large change LL: large change
  L2 UL: large change all osems: no remarkable changes
  L2 LL and UR: small change all osems: no remarkable changes
Non-image files attached to this report
ETMeqdataxlsx.pdf
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