NAME: xdavg PURPOSE: Interactive tool for combining and correcting OSIRIS XD spectra. DESCRIPTION: This program handles the removal of instrumental defects from OSIRIS XD spectra. This is accomplished through the removal of bad points in the data from bad pixels on the NICMOS chip, applying slope corrections to the spectra to remove the effects of wavelength dependent vignetting, and the exclusion of bad spectra from the averaging process. CATEGORY: Spectroscopy CALLING SEQUENCE: xdavg INPUTS: OPTIONAL INPUT PARAMETERS: KEYWORD INPUT PARAMETERS: OUTPUTS: Spectra selected in the tool are displayed in cw_osipl. The final products consist of the individual corrected spectra and their averages. These spectra have had all the badflag editting done, primary slope correction applied to make them consistent within a set, all the bad spectra excluded, and have had the secondary slope correction applied relative to some reference. A preliminary amount of ratioing is also done in which these corrected spectra are ratioed against either one other corrected average or an airmass corrected denominator interpolated between two of these corrected averages. Each individual ratio is saved as well as the average of the set. The badflags for each spectrum are also saved. File format for each type is: Individual corrected spectra - Spec/yymmddc.### where ### is the index number of the spectrum. These have both the primary and secondary slope corrections applied but the flux in the file is still in units of [counts]. Average corrected spectra - Corr/yymmdda.## where ## is the set number of the average. These are weighted set averages and the "flux" values are all in counts/sec. Individual ratio spectra - Ratio/yymmddr.### where ### is the index number of the spectrum. Average ratio spectra - Ratio/yymmdda.## where ## is the set number of the average. Badflags have the same file format as their corresponding parents and are in the same directory except they are "b." files instead. KEYWORD OUTPUT PARAMETERS: COMMON BLOCKS: SIDE EFFECTS: RESTRICTIONS: At present, you cannot remove all spectra in a set (flag with X) with this tool. You must edit the .tbl file by hand in this case. PROCEDURE: This program begins by loading the information regarding the nights worth of data by loading the table and calibration files from whichever directory that has been selected. Next, the user can select to display whichever spectra that help in the process of removing the instrumental defects and edit them accordingly. The primary slope correction is applied automatically to the spectra. Spectra may also be excluded from the averages by means of either an x or s flag. The bulk of the editting of this type should be accomplished before moving on to making ratios with the bottom part of the tool and applying the secondary slope correction manually. You begin by selecting one numerator as the reference denominator and then getting the night consistent by applying the secondary slope correction to various ratios. Moving the an object into the denominator is also the point at which the various product spectra are saved to disk. Instance structure locations state - First child of XDAVG Contains all widget ids. tbl - UVALUE of state.cwdid (current working directory) Contains the contents of the observation summary table as generated by XDSPEC. Also has derived information about groups of observations. calib - UVALUE of state.tblnameid (name of current table file). This is the calibration structure as read in by ldcalir oblist - UVALUE of state.tblnsetid spec - UVALUE of state.butspecid (Structure containing the various levels of processed spectra as well as flags indicating how far each has been processed).