Observation information
- date-obs: 2026-02-12
- time-obs: 15:08:02.705800000
- date-end: 2026-02-12
- time-end: 17:13:51.046500000
- obs_id: A14_083T04_9000006550
- exposure: 3642.76532644
- sourceid: NGC1522
- observer: Rakshit
- ra_pnt: 61.533
- dec_pnt: -52.66842
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_083T04_9000006550_56146cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56146cztM0_level2_quad_clean.evt
|
| Size (bytes) | 758,082,240 | 87,215,040 |
| Size | 723.0 MB
| 83.2 MB
|
| Events in quadrant A | 5,091,844 | 626,397 |
| Events in quadrant B | 3,725,032 | 681,193 |
| Events in quadrant C | 12,818,396 | 327,252 |
| Events in quadrant D | 5,899,758 | 531,594 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19756 | 1 |
| B | 0 | 15805 | 1 |
| C | 0 | 42756 | 1 |
| D | 0 | 22299 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6799 | 307 | 4.515370% |
| B | 6799 | 216 | 3.176938% |
| C | 6800 | 3579 | 52.632353% |
| D | 6800 | 614 | 9.029412% |
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 | 7548 | 6798 | 268 | 268 | 3.55% | 3.94% |  |
| B | 7548 | 6798 | 120 | 120 | 1.59% | 1.77% |  |
| C | 7550 | 6801 | 3607 | 3607 | 47.77% | 53.04% |  |
| D | 7550 | 6801 | 652 | 652 | 8.64% | 9.59% |  |
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 | 7 | 64 | 1245891 | 7035.41 | 708 | 689 | 177.0 |
| A | 3 | 14 | 332241 | 1873.27 | 708 | 689 | 177.0 |
| A | 0 | 8 | 310317 | 1749.4 | 708 | 689 | 177.0 |
| B | 5 | 185 | 212373 | 1395.5 | 709 | 684 | 151.7 |
| B | 4 | 171 | 188161 | 1235.89 | 709 | 684 | 151.7 |
| B | 0 | 171 | 119029 | 780.16 | 709 | 684 | 151.7 |
| C | 9 | 38 | 8480489 | 57100.03 | 542 | 539 | 148.5 |
| C | 15 | 147 | 1029235 | 6926.76 | 542 | 539 | 148.5 |
| C | 15 | 148 | 707839 | 4762.63 | 542 | 539 | 148.5 |
| D | 11 | 129 | 1424436 | 7534.6 | 665 | 635 | 189.0 |
| D | 2 | 249 | 765237 | 4046.19 | 665 | 635 | 189.0 |
| D | 8 | 240 | 396458 | 2094.65 | 665 | 635 | 189.0 |
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 |  |