Cycle 20 PIMMS Effective Areas
Released as of 14 DEC 2017
The PIMMS Cycle 20 effective areas are illustrated below. As is always the case, the time-delay factor for the ACIS contaminant build-up has been updated. Additionally, the HRC-I QE has been updated (CalDB 4.7.5), and the HRC-S QEU time-dependent files have been updated as well (CalDB 4.7.4).
The model OBS_IDs and the ARF-building scripts have now been standardized for Chandra PIMMS calculations. Hence the procedures are the same as with cy19.
The Cycle 20 PIMMS Effective Area Public Information describes how the effective area files were generated, including the new HETG and LETG GREFFs and the new HRC-S QE file.
Effective area plots are provided for the following detector configurations: