Test Summary report of 21 October 1998. A complete copy of that report is available here .
Hot pixels cause saturated columns and weaker vertical trails in bias frames.
In long dark frames weaker hot pixels may also saturate pixels locally about the hot pixel site, faint hot pixels become more prominant and some that are undetectable at short integration become prominent. A defect map may be needed to assist observers in the placement of their obejects. The trailed charge from hot pixels can appear to start up unexpectedly in windowed images when the hot pixel is not contained within the window. The trailed charge is, however, in the expected column containing the hot pixel and is of the expected intensity. A quick look for trapping sites has revealed only a small number of obvious traps.