Reports until 18:28, Tuesday 29 September 2015
H1 CAL
madeline.wade@LIGO.ORG - posted 18:28, Tuesday 29 September 2015 (22090)
Bug fix to GDS calibration correction filters

I updated the GDS calibration correction filters today to reflect the bug fixes to the actuation and sensing time delays (see aLOG #22056).  Attached are plots of the residual and control correction filters, which include the updated time delays.  I have also attached plots that compare the h(t) spectra from the CALCS and GDS calibration pipelines and the spectrum residuals.  There is now a larger discrepency between CALCS and GDS because the time delays that were added to CALCS to bring the two closer together are now no longer as accurate.  Updates to the delays in CALCS may be coming as the differences are investigated more.

The new GDS calibration correction filters were generating using

create_partial_td_filters_O1.m

which is checked into the calibraiton SVN (r1560) under

/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/Common/MatlabTools
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/Common/MatlabTools
aligocalibration/trunk/Runs/O1/Common/MatlabTools.
 
The new filters file is also checked into the calibration SVN under

aligocalibration/trunk/Runs/O1/GDSFilters

The filters file is called H1GDS_1127593528.npz.

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