http://portal.nersc.gov/archive/home/projects/cxidb/www/83/agipd-calib-v1/kuhnm/pcdrs/r0122-r0123-r0124-r0125-r0126-r0127-r0128-r0129/pcdrs_joined_constants_agipd.h5
http://portal.nersc.gov/archive/home/projects/cxidb/www/83/agipd-calib-v1/kuhnm/pcdrs/r0122-r0123-r0124-r0125-r0126-r0127-r0128-r0129/pcdrs_joined_constants_xfel.h5