This should have no practical effect because channels with NULL values will presumably have bad quality set. This change is necessary because some manipulations occur to the values before they are ignored. The cstat statistic has been extended to work in the case where a background spectrum has been read in. A new model type has been added for convolution on the model times the effective area. This is used for pile-up models in CCDs.
Output There are new options on the identify command.
The user can now switch between line lists. The APEC line list has been added which, uses the same APEC line list file as the apec model. The APEC option has additional options to specify a temperature and an emissivity limit. If the user has setplot wave then the input range is specified in Angstroms and wavelengths rather than energies are written out. The model rate has been added to the tclout rate option.