With the previous filters file at LHO, the GDS pipeline was not computing correct values for the kappas. As pointed out by Darkhan, the ESD line frequency at LHO was changed on Aug 24, 2016. The value used in aligocalibration/trunk/Runs/O2/TDfilter/create_partial_td_filters.m was updated accordingly, and the new filters file computes the kappas as expected. The new filters file can be found in the calibration SVN: aligocalibration/trunk/Runs/PreER10/GDSFilters/H1GDS_1159648300.npz These filters were made using revision #3400 of the calibration SVN. Several plots are attached: A plot of the h(t) spectrum calibrated using this filters file and the output of the front-end CALCS model CALCS vs. GDS residual plot Plots of the control correction filter and the residual correction filter