called by processQC from $DFS_PRODUCT/ZPL_IFLAT_IMG/$DATE as qc_ZPL_IFLAT_IMG -a $AB -u sphere -level 1 2\>\&1 \> $DFS_LOG/$AB.qclog
meaning output is logges to $DFS_LOG/$AB.qclog !!!
QC1 parameters written into QC1 table: qc_iframe_raw_med median of raw frame qc_SNR_iframe signal-to-noise ratio in product frame qc_rms_iframe rms of product frame qc_plane_rms rms of plane medians to check for shutter issues