shifter: Brennan Hughey
fellow: Matthew Ball
 link to full shift report 

* Fairly quiet week from a data quality perspective. 68.9% observing based on summary pages (reduced by a couple software issues: alogs 51838 and 51883 ) in the vicinity of 110-115 Mpc range.

* Front-end calibration improved from Monday September 9th and is in better agreement with GDS, see Jeff Kissel's alog 51819. Detcharians will note that the gray trace on the range plots in the summary plots dropped about 5 Mpc late Monday onwared to be in better agreement with the red GDS trace.

* A bad period of scattering occurred 20-22 UTC on Monday September 9th along with glitches above 2 kHz. In terms of environmental noise, this most closely correlates with EY ground motion in the 0.3-1Hz band, which just appears to be wind based on Matthew Ball's investigation.

* Rung-up violin mode late Saturday corresponds to visible omicron glitches, which is unusual and seems potentially problematic for long duration burst and possibly other searches.

* Hveto results are typical for recent data, the round 1 winner is an LSC channel witnessing persistent low frequency glitching just above 10 Hz (LSC-REFL_A_LF_OUT_DQ,LSC-REFL_A_RF9_Q_ERR_DQ,LSC-PRCL_IN1_DQ), LSC-POP_A_LF is also a significant channel, typically round 2, as a witness of loud glitches and occasionally scattering.

* As of September 15th, it has been 75 days since the last significant outbreak of whistles coupling into DARM.