Data Storage Requirements
The sizes of WFC3 data files (in MB) are given in
Table 2.7. The following assumptions were made when calculating these sizes:
the ERR, DQ, SAMP, and TIME arrays are null in the raw files,
the SAMP and TIME arrays are null in the ima files,
IR images have the maximum of 16 MultiAccum readouts, and
images are full-frame and unbinned.
Table 2.7: Sizes of WFC3 data files.
Size of FITS file
The size of the drizzled image (_drz) is for a single image that is drizzled only for the purpose of performing geometric corrections and for combining the two UVIS chips. It assumes that the input and output image pixels are approximately the same size (drizzle scale parameter is 1.0).