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General overview

The fault data base allows a more detailed overview of the faults that are reported. In Table 2 the number of faults and total time lost as a function of the system and kind of fault is presented together with the overall numbers for the last period (28).



Table 2: Down time statistics for period 29$^a$
Syst/Type Soft Elec Optics Mech Others Total P28
Telescope 5 00:20 6 01:30 1 00:00 4 00:20 1 00:00 17 02:10 13 03:05
Building 0 $-$ 2 00:00 0 $-$ 6 00:00 0 $-$ 8 00:00 12 03:40
Computers 16 00:25 2 00:00 0 $-$ 0 $-$ 1 00:00 19 00:25 11 00:40
ALFOSC 2 00:15 0 $-$ 6 00:30 1 00:00 1 00:00 10 00:45 18 21:10
MOSCA 0 $-$ 0 $-$ 0 $-$ 0 $-$ 0 $-$ 0 00:00 0 00:00
NOTCam 3 00:10 5 00:30 2 00:30 2 13:00 1 00:00 13 14:10 2 00:05
StanCam 4 00:15 0 $-$ 0 $-$ 0 $-$ 1 00:15 5 00:30 1 00:10
Others 0 $-$ 3 00:30 1 00:30 1 00:00 0 $-$ 5 01:00 6 01:25
Total 30 01:25 18 02:30 10 01:30 14 13:20 5 00:15 77 19:00 63 30:15
P28 29 05:00 17 24:35 0 00:00 13 00:40 4 00:00 63 30:15    
$^a$For each system-type category the total number of faults and total time lost are given

One conclusion that can be drawn from the information in Table 2 is that beyond the problem with the filter wheel in NOTCam there were no other significant problems causing downtime.


next up previous contents
Next: Instrument use Up: Down Time Previous: Main problems   Contents
Thomas Augusteijn 2005-10-27