The WFC3 file structure differs for UVIS and IR data, as explained in the following 2.2 of the Introduction to the HST Data Handbooks) within a single FITS file.
The effect of hot pixels, about 1000 new/day/chip using a threshold of 54e-/hr/pix, is addressed with anneal procedures, dark calibration files, and dithering.
Please contact the HST Help Desk for assistance. We encourage users to access the new web portal where you can submit your questions directly to the
The instrument-specific overhead times for WFC3 exposures are dominated by the time to move the filter wheels, to read out the detector, and especially toContributors. This document is written and maintained by the WFC3 Team in the Instruments. Division of STScI. The WFC3 Team, at the time of this writing,