Hubble Space Telescope WFC3 filenames

WFC3 filenames

Note: The WFC3 files names are all starting with the letter 'I'

Note: The 9th character of an association of simple observation is always '0' at CADC

Note: Please consult the full documentation.

The suffixes used for WFC3 raw and calibrated data products are described in the following and closely mimic those used by ACS and NICMOS.

For a unique observation

CADC file names (proxy)	File Suffix	Description	Units	Type	Access Example
ixxxxxxxx_raw.fits	_RAW.FITS	Raw data	DN	RAW	i9zl53i0q_raw.fits
ixxxxxxxx_spt.fits	_SPT.FITS	Telescope and WFC3 telemetry and engineering data		RAW	i9zl53i0q_spt.fits
ixxxxxxxx_trl.fits	_RAW.FITS	Trailer file with processing log		RAW	i9zl53i0q_trl.fits
ixxxxxxxx_flt.fits	_FLT.FITS	Calibrated, flat-fielded individual exposure	electrons (UVIS) / electrons/s (IR)	CAL	i9zl53i0q_flt.fits
ixxxxxxxx_flt_hlet.fits	_FLT_HLET.FITS	Headerlet header for mapping geometric distorsion		CAL	i9zl53i0q_flt_hlet.fits
ixxxxxxxx_ima.fits	_IMA.FITS	Calibrated intermediate MultiAccum IR exposure	electrons	CAL	i9zl53i0q_ima.fits

For a composite observation (9th character is '0')

CADC file names (proxy)	File Suffix	Description	Units	Type	Access Example
ixxxxxxx0_asn.fits	_ASN.FITS	Association file for observation set		RAW	i9zl45010_asn.fits
ixxxxxxx0_drz.fits	_DRZ.FITS	Calibrated, geometrically-corrected, dither-combined image	electrons	CAL	i9zl45010_drz.fits

For more details, please consult the WFC3 instrument handbook at STScI.