J. Kissel

As a part / start of the review process for the calibration pipeline, it has been requested that -- along with a long-term view of the PCAL to GDS-CALIB_STRAIN ratios (as shown in LHO aLOG 24285) -- we take snap-shots of the entire C01 GDS-CALIB_STRAIN spectrum at a smattering of times, and take the ASD ratios as has been done for the official strain sensitivity plots (see e.g. G1501223). I've done so over the early part of the run, between Sep 11 and Oct 22 2015, every 5 days or so, 
Sep 11 2015 20:30:43 UTC
Sep 18 2015 04:50:43 UTC
Sep 25 2015 07:23:43 UTC
Oct 01 2015 01:30:43 UTC
Oct 05 2015 05:31:43 UTC
Oct 11 2015 18:57:43 UTC
Oct 17 2015 07:41:43 UTC
Oct 22 2015 03:12:43 UTC
(recall that we get 420 [sec] of data for each ASD -- see T1500365).  Attached are the zooms of the ASDs of both GDS-CALIB_STRAIN and PCAL displacement around the three PCAL frequencies (
C01_H1_O1_Sensitivity_displacement_asd_pcalzoom.pdf) and the ratio of these ASDs (C01_H1_O1_Sensitivity_displacement_asd_pcalzoomratio.pdf) for these 8 data sets. I figured this was plot overload, so I leave all nine plots that come with each official strain simply committed to the CalSVN here:
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Results/DARMASDs/
where the collection of plots are dated accordingly (e.g.  2015-10-22_C01_H1_O1_Sensitivity.pdf). 

The message: for these spot-checks, the ratio between GDS C01 calibrated displacement and PCAL calibrated displacement is within the expected 10%, and all but the earliest data point data point is better than 5%. Very good -- great job CAL team!

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These plots were made with a generalization of the official strain producing script that now lives in
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/Common/Scripts/produceofficialstrainasds_O1_C01.m