Observation information
- date-obs: 2026-03-02
- time-obs: 18:23:43.496100000
- date-end: 2026-03-02
- time-end: 20:29:54.477200000
- obs_id: A14_083T05_9000006554
- exposure: 2305.10596544
- sourceid: NGC1556
- observer: Rakshit
- ra_pnt: 64.43679
- dec_pnt: -50.16444
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T05_9000006554_56415cztM0_level2.fits
| modeM0/AS1A14_083T05_9000006554_56415cztM0_level2_quad_clean.evt
|
| Size (bytes) | 864,950,400 | 77,022,720 |
| Size | 824.9 MB
| 73.5 MB
|
| Events in quadrant A | 14,284,246 | 213,219 |
| Events in quadrant B | 6,240,000 | 571,191 |
| Events in quadrant C | 4,384,816 | 572,114 |
| Events in quadrant D | 6,594,520 | 511,427 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 46874 | 1 |
| B | 0 | 23082 | 1 |
| C | 0 | 18039 | 1 |
| D | 0 | 24411 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6646 | 4538 | 68.281673% |
| B | 6646 | 1167 | 17.559434% |
| C | 6647 | 339 | 5.100045% |
| D | 6647 | 615 | 9.252294% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
| Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
| A | 7570 | 6645 | 4184 | 4184 | 55.27% | 62.96% |  |
| B | 7571 | 6647 | 754 | 754 | 9.96% | 11.34% |  |
| C | 7572 | 6648 | 294 | 294 | 3.88% | 4.42% |  |
| D | 7572 | 6648 | 510 | 510 | 6.74% | 7.67% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
| Pixel properties |
Quadrant properties |
| Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
| A | 12 | 3 | 8938912 | 85874.66 | 410 | 398 | 104.1 |
| A | 7 | 64 | 1396665 | 13414.3 | 410 | 398 | 104.1 |
| A | 12 | 194 | 1141176 | 10959.75 | 410 | 398 | 104.1 |
| B | 4 | 206 | 2445075 | 17495.16 | 648 | 626 | 139.7 |
| B | 5 | 185 | 527344 | 3769.77 | 648 | 626 | 139.7 |
| B | 8 | 128 | 344038 | 2457.83 | 648 | 626 | 139.7 |
| C | 12 | 254 | 1179658 | 6568.57 | 658 | 651 | 179.5 |
| C | 15 | 230 | 462894 | 2575.28 | 658 | 651 | 179.5 |
| C | 12 | 252 | 50853 | 279.69 | 658 | 651 | 179.5 |
| D | 2 | 120 | 1092388 | 5939.98 | 639 | 608 | 183.8 |
| D | 8 | 129 | 1020652 | 5549.69 | 639 | 608 | 183.8 |
| D | 5 | 113 | 750184 | 4078.17 | 639 | 608 | 183.8 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
| Quadrant A |
 |
 |
Quadrant B |
| Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
| Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
| Parameter |
Plot |
| CZT HV Monitor |  |
| D_VDD |  |
| Temperature 1 |  |
| Veto HV Monitor |  |
| Veto LLD |  |
| Alpha Counter |  |
| _CPM_Rate |  |
| CZT Counter |  |
| +2.5 Volts monitor |  |
| +5 Volts monitor |  |
| _ROLL_ROT |  |
| _Roll_DEC |  |
| _Roll_RA |  |
| Veto Counter |  |