I restarted the GDS calibration pipeline on the testing machine (l1dmt3) around GPS time 1252869000.  The purpose of the restart was to test the wait time feature of gstlal-calibration-1.2.11.  The new configuration file being used can be found in the calibration SVN revision 8459 here:

aligocalibration/trunk/Runs/O3/GDSFilters/H1GDS_1252867296_TEST.ini

The wait time is set to 10 seconds, so if there is no raw data available for 10 seconds, the pipeline will automatically start filling in this missing data with zeros.