'''[wiki:GraspSwToolkit grasp_save_ota]'''

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This is a special version of grasp_save which creates FITS files with a bit more than the minimal contents generated by grasp_save.  For a specific application, it may be necessary to augment the FITS files with other tools later, or generate an enhanced version of grasp_save.  In the latter case, grasp_save_ota can serve as an example.  The following table summarizes some of the differences:

||'''Feature'''||grasp_save?||grasp_save_ota?||
||Basic FITS support||yes||yes||
||Keep or subtract pedestal values ("-3" option)||yes||yes||
||Automatically generate MEF when multiple amplifiers?||yes||yes||
||Request pixels on a specific network interface ("-i" option)||no||yes||
||Sequentially save up to 8 OTA cell rows ("-r" option)||no||yes||
||WCS Keywords ("-w" option)||no||yes||

Another way to determine if you need grasp_save_ota (or parts of it, incorporated into a grasp_save customized for your detector) is to look at the keywords you want to end up with in the file.
Source of some of the FITS keywords:

||'''Keywords'''||'''Source'''||
||SIMPLE, BITPIX, NAXIS*, BZERO, BSCALE, [N]EXTEND, XTENSION, EXTNAME||grasp_save basic keywords||
||CONTROLR='STARGRASP', CON*||supplied to grasp_save by controller||
||PONTIME||supplied to grasp_save by controller||
||DETTEM||supplied to grasp_save by controller (only meaningful if hw exists.)||
||CELLMODE||supplied to grasp_save by controller (only meaningful for OTAs)||
||CLV_*, ADC_*, DAC_*||supplied to grasp_save by controller (describes all timing and volts.)||
||TSP_*||supplied to grasp_save_ota by controller (internal controller time stamping)||
||IMAGESWV, DATE, FILENAME, DARKTIME||grasp_save_ota (should also be done by grasp_save, but it isn't right now)||
||CCDSUM, DETSIZE, DATASEC, BIASSEC, DETSEC, LTV*, LTM*, ATV*, ATM*||grasp_save_ota, Iraf-style region sections||
||IMNAXIS*, IMTM*, IMNPIX*, CNAXIS*, CNPIX*, CCDBIN*, PRESCAN*, OVRSCAN*||grasp_save_ota, Vista-style regions||
||CELLGAP*, FPPOS||grasp_save_ota, OTA-specific keywords||
||WCSNAME*, CTYPE*, CUNIT*, CRVAL*, CRPIX*, CDELT*, CD?_?||grasp_save_ota -w||
||MJD-OBS, EXPTIME, SHUTSTAT, SHUT*||fsnap_[shutter] postprocessor||
||INSTRUME, CMMTOBS, OBSTYPE, EXPREQ, ...||fsnap_[instrument] postprocessor||
||ORIGIN, TELESCOP, AIRMASS, RA/DEC, etc. ||fsnap_[telescope] postprocessor (e.g., fsnap_gpc_otis)||