The task saxposcor is a tcl script that corrects the coordinate of LECS and MECS event files through the following steps:
 

• modification of  the "sky coordinates at reference pixel" keywords (TCRVL9 and TCRVL10 for MECS, TCRVL11 and TCRVL12 for LECS) in the header of the event files. The updated values of the TCRVL keywords are calculated according to the equations discussed in the text.

• addition of the new keyword CCFLAG (with value "True") indicating that the correction has been performed. The task saxposcor performs a check of the presence of the CCFLAG keyword to prevent from applying the correction more than once.

• addition of two new keywords (OTCRVL9  and OTCRVL10 for MECS, OTCRVL11 and OTCRVL12 for LECS) recording the values of the TCRVL keywords before the correction.

The task can be used to correct any BeppoSAX NFI event file (LECS, MECS1, MECS2, MECS3, MECS23 and MECS).
 

The usage of saxposcor is the following:

The task saxposcor needs the FTOOLS package installed to run.
 

To install saxposcor retrieve the following two files:

                                                                    saxposcor
                                                                    saxposcor.par
 

Please note that the parameter file "saxposcor.par" must be put in the directory $FTOOLS/syspfiles/
 

Please send questions/problem reports to: asdc_helpdesk@asdc.asi.it