The fringe correction step uses a FRINGE reference file, which has the same format as the FLAT reference file. This correction is applied only to MIRI MRS (IFU) mode exposures, which are always single full-frame 2-D images.
CRDS Selection Criteria¶
Fringe reference files are selected by DETECTOR and GRATNG14.
Reference File Format¶
Fringe reference files are FITS format with 3 IMAGE extensions and 1 BINTABLE extension. The primary data array is assumed to be empty. The 3 IMAGE extensions have the following characteristics:
|SCI||2||ncols x nrows||float|
|ERR||2||ncols x nrows||float|
|DQ||2||ncols x nrows||integer|
Image dimensions should be 1032 x 1024.
The BINTABLE extension uses
EXTNAME=DQ_DEF and contains the bit assignments
of the conditions flagged in the DQ array.