Bad pixel determination with better software

["Creager, Robert S" <CreagRS@LOUISVILLE.STORTEK.COM>]

As some of you noticed, my previous histograms were incorrect.  Something
about mixing the rows in the columns in CFITSIO routines...  Well anyhow,
the question still stands, even though the data looks better (I also removed
7 lead in/out pixels on each row/column).  Is there a "standard" way of
determine the locations of bad pixels in the image?  Do you use the dark
frame, fabricated flat field?  Or do you even not worry about the pixels
being 'bad' unless they are at the extremes (0 or 65535) from a dark?  Will
CCD's loose a single pixel, or row/column over time?

% ./histo h3r1836.524 21
    0 to  3120 =       0
 3120 to  6241 =       0
 6241 to  9362 = 4102506
 9362 to 12483 =     123
12483 to 15603 =       7
15603 to 18724 =       6
18724 to 21845 =       0
21845 to 24966 =       2
24966 to 28086 =       1
28086 to 31207 =       1
31207 to 34328 =       0
34328 to 37449 =       0
37449 to 40569 =       0
40569 to 43690 =       2
43690 to 46811 =       0
46811 to 49932 =       0
49932 to 53052 =       0
53052 to 56173 =       0
56173 to 59294 =       0
59294 to 62415 =       0
62415 to 65536 =       0

% ./histo h4r1836.524 21
    0 to  3120 =       0
 3120 to  6241 =       0
 6241 to  9362 = 4101496
 9362 to 12483 =    1086
12483 to 15603 =      63
15603 to 18724 =       1
18724 to 21845 =       0
21845 to 24966 =       0
24966 to 28086 =       0
28086 to 31207 =       0
31207 to 34328 =       0
34328 to 37449 =       2
37449 to 40569 =       0
40569 to 43690 =       0
43690 to 46811 =       0
46811 to 49932 =       0
49932 to 53052 =       0
53052 to 56173 =       0
56173 to 59294 =       0
59294 to 62415 =       0
62415 to 65536 =       0


Robert S. Creager
Senior Embedded Software Development Engineer
Multi Platform Tape Library Development
Ph:      303-673-2365
Fax:    303-661-5379
Pager: 888-912-4458
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