ii_shadow_build prepares ISGRI data for scientific analysis.
During the run of this executable Data Structures ISGR-DETE-SHD for a detector shadowgrams and ISGR-EFFI-SHD for ISGRI detector efficiency shadowgrams are filled. These Data Structures keep the position of each pixel and the total counts in given energy band during integration time or efficiency correspondingly.
During PICsIT analysis the same information about the PICsIT detector is written to PICS-DETE-SHD and PICS-EFFI-SHD Data Structures.