This program takes as input an ASTERIX image dataset created by WFCSORT and reports exposure information for any location within the image. The quoted effective exposure is the value by which a raw count derived at the location should be divided in order to produce a count rate corrected to the axis of the instrument at the epoch of the data set. In addition the program displays the efficiency of the detector for the epoch of the data set relative to the launch efficiency. This relative efficiency may be used to increase a measured flux to that appropriate to a non-degraded detector. The exposure calculation works in a similar manner to that in the WFCEXP program described above.