This document is an interim report on the analysis of data collected for the calibration of the AXAF CCD Imaging Spectrometer (ACIS).  The goal of the calibration is to provide the most accurate estimates of the in-orbit performance of the ACIS/HRMA instrument and to enable the most accurate translation of in-orbit measurements to absolute and relative values of the incident X-ray flux and physical models of the source emission. 

This paper presents the information needed for the operations and AXAF Science Center (ASC) personnel to properly operate and maintain the ACIS experiment on orbit. 

TARA is a suite of interactive tools used to analyze calibration data.