The present targets for the Total and Cold times are:
Total time per SI Mode per measurement: 7600.0 seconds
Fraction of total time the measurement should be cold: 60.0%
II. Statistics Since the Start of the Current Epoch
Cold Time Statistics:
NOTICE!!!! We have switched to 6 month epochs!!!
The epochs start on the following Days of the Year: 032, 213
Stats | TE_007AC | TE_007AE | TE_00B26 |
---|---|---|---|
Total Exp. Cold Time (secs) | 203679 | 203679 | 203679 |
Total Actual Cold Time (secs) | 129838 | 129285 | 120253 |
Delta From Expected (secs) | -73840 | -74393 | -83425 |
% of Exp. Cold Total (secs) | 63.75% | 63.48% | 59.04% |
Stats | TE_007AC | TE_007AE | TE_00B26 |
---|---|---|---|
Total Expected Time (secs) | 339466 | 339466 | 339466 |
Total Actual Time (secs) | 323049 | 319479 | 331911 |
Delta From Expected (secs) | -16416 | -19986 | -7554 |
% of Expected Total (secs) | 95.16% | 94.11% | 97.77% |
SI Mode | Total Number of Obs. | Total Exposure Time (sec) | Average Exposure (sec/obs) | Primary 6 Chip SI Modes | TE_007AC | 42 | 298899.00 | 7116.64 |
---|---|---|---|
TE_007AE | 37 | 275781.00 | 7453.54 |
TE_00B26 | 44 | 302761.00 | 6880.93 | Old 6 Chip SI Modes | TE_00216 | 0 | 0.00 | 0.00 |
TE_0021C | 0 | 0.00 | 0.00 |
TE_008EA | 0 | 0.00 | 0.00 | 5 Chip SI Modes | TE_00C60 | 6 | 53302.00 | 8883.67 |
TE_00CA8 | 5 | 43699.00 | 8739.80 | 4 Chip SI Modes | TE_00C62 | 0 | 0.00 | 0.00 | Totals: | 134 | 974442.00 | 7271.96 |
All of the TE_00CA8s get counted as TE_007AE So watchout for TE_00B26 over-representation. A word about the Total Time stats:
- The Total Expected Time values for each SI mode in the table is calculated by:
# of ECS runs executed in this epoch so far * 10,000.0 * 0.76 / 3.0
Where:
10,000.0 seconds is the maximum possible time for ECS runs
We exepct only 7600.0 seconds on average - hence multiply by 0.76
We divide by three because we want the time evenly distributed across all three aggregate SI modes
A word about the COLD Time stats:
Cold Time is defiined by focal plane temperatures <= -118.7 degrees C:
The Total Expected Cold Time value is 60.0% of the Total Expected Time (see above).
SI Mode Mapping between 6,5 and 4 chip modes:
The 6 chip SI Modes consist of three distinct modes. But there are only 2, 5 chip SI Modes and only one 4 chip SI mode. To make tracking feasible, the 4 and 5 chip modes were mapped into the 6 chip modes in the following manner:
6 chip 5 chip 4 chip
TE_007AC -> TE_00C60 TE_00C62
TE_00B26 -> TE_00C60 TE_00C62
TE_007AE -> TE_00CA8
Half of the TE_00C60s get counted towards TE_007AC and the other half get counted with the TE_00B26s
Half of the TE_00C62s get counted towards TE_007AC and the other half get counted with the TE_00B26s.
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