WFC3 Reference File Images & Tables
Reference files used by the WFC3 calibration pipeline (calwf3 and PyDrizzle/MultiDrizzle) are updated on a regular basis. Current reference files files can be retrieved from the HST archive, or downloaded directly from the iref directory. If you choose to access the files via this ftp server, keep in mind that there is a known bug in trying to access files via ftp server using Safari. The recommended browser is Firefox.
If you would like to receive an e-mail every time a new WFC3 reference file is delivered and the database is updated, you can subscribe to the wfc3_reffiles_upd mailing list. To subscribe to this list, send an e-mail to MajorDomo @ stsci.edu with the following in the body of the message:
subscribe wfc3_reffiles_upd your_address .
| Reference File Type | File Suffix | Header Keyword | Detector |
|---|---|---|---|
| Bias Images Additive stationary pattern in the electronic zero point of the CCDs. More... |
BIA | BIASFILE | UVIS |
| Dark Images Additive noise due to thermal effects. More... |
DRK | DARKFILE | UVIS IR |
| Flat-Field Images Variations in the sensitivity of the detectors. More... |
PFL | PFLTFILE | UVIS (bin 123) IR |
| Linearity Correction Files Non-linearity effects in the IR detector. More... |
LIN |
NLINFILE |
IR |
| Bad Pixel Tables All known permanently bad pixels. More... |
BPX |
BPIXTAB |
Both detectors |
| Detector Characteristics Tables Detector parameters such as readnoise, gain, and bias levels. More... |
CCD |
CCDTAB |
Both detectors |
| Overscan Region Tables Overscan (UVIS) or reference pixel (IR) areas. More... |
OSC |
OSCNTAB |
Both detectors |
| Cosmic Ray Rejection Tables Parameters for performing image stacking. More... |
CRR |
CRREJTAB |
Both detectors |
| MultiDrizzle Parameter Table Input parameters for combining associated exposures. More... |
MDZ |
MDRIZTAB |
Both detectors |
| Pixel Area Correction Tables Map of pixel area variation across the field of view. More... |
PAM |
- |
Both detectors |
| Synphot Throughput Files Synphot is the STSDAS synthetic photometry package. More... |
- |
- |
Both detectors |
| Image Photometry Table Parameters for performing photometry correction More... |
IMP |
IMPHTTAB |
Both detectors |
| Post-Flash Image File Application of a post-flash image. More... |
FLS | FLSFILE | UVIS |
| Detector-to-Image Correction File 2-D look-up table of astrometric corrections for shifts caused by the lithographic-mask pattern More... |
D2I | D2IMFILE | UVIS |
Tables used to calculate SIP coefficients
(see MultiDrizzle Handbook)
| Reference File Type | File Suffix | Header Keyword | Detector |
|---|---|---|---|
| Image Distortion Coefficient Tables Geometric distortion models. More... |
IDC | IDCTAB | Both detectors |
Currently not supported
| Reference File Type | File Suffix | Header Keyword | Detector |
|---|---|---|---|
| Analog-to-Digital Tables Currently disabled |
A2D | ATODTAB | N/A |