Dark frames missing from some data files

[benj]

Some flights appear to be missing dark frames (should have been collected automatically). This affects the following flights so far:

VOC_03-2008 (#197), Eagle and Hawk, all lines
VOC_04-2008 (#205), Eagle and Hawk, all lines
VOC_05-2008 (#206), Eagle and Hawk, all lines
VOC_06-2008 (#209), Eagle and Hawk, all lines

CEH07_01-2007 (#53), Eagle, file 8
CEH07_05-2007 day 73 (#59), Eagle and Hawk line 1 (not processed at PML)
GB07_05-2007 day 116a (#54), Eagle, files 1-3

WM06_11-2006 day 142 (No ticket), Eagle, all lines
HY05_07-2006 day 194 (No ticket), Eagle and Hawk, all lines
GB06_05-2006 days 195A & C (No ticket), Eagle and Hawk, all lines