Observation information
- date-obs: 2026-02-18
- time-obs: 13:31:57.864000000
- date-end: 2026-02-18
- time-end: 15:26:40.848900000
- obs_id: A14_083T04_9000006550
- exposure: 461.324539363
- 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_56234cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56234cztM0_level2_quad_clean.evt
|
| Size (bytes) | 943,070,400 | 70,574,400 |
| Size | 899.4 MB
| 67.3 MB
|
| Events in quadrant A | 16,627,986 | 48,559 |
| Events in quadrant B | 5,139,668 | 617,820 |
| Events in quadrant C | 4,017,464 | 585,371 |
| Events in quadrant D | 8,613,793 | 425,074 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 53718 | 5 |
| B | 0 | 19816 | 2 |
| C | 0 | 16825 | 2 |
| D | 0 | 30155 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6592 | 6248 | 94.781553% |
| B | 6593 | 682 | 10.344305% |
| C | 6593 | 271 | 4.110420% |
| D | 6593 | 1910 | 28.970120% |
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 | 6882 | 6594 | 5875 | 5875 | 85.37% | 89.10% |  |
| B | 6883 | 6595 | 399 | 399 | 5.80% | 6.05% |  |
| C | 6883 | 6595 | 155 | 155 | 2.25% | 2.35% |  |
| D | 6883 | 6595 | 1678 | 1678 | 24.38% | 25.44% |  |
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 | 115 | 7822510 | 87900.67 | 352 | 344 | 89.0 |
| A | 8 | 176 | 3552373 | 39915.51 | 352 | 344 | 89.0 |
| A | 15 | 32 | 2631572 | 29568.12 | 352 | 344 | 89.0 |
| B | 5 | 185 | 895510 | 6235.65 | 676 | 651 | 143.5 |
| B | 4 | 171 | 503237 | 3502.17 | 676 | 651 | 143.5 |
| B | 4 | 156 | 293914 | 2043.54 | 676 | 651 | 143.5 |
| C | 12 | 254 | 444812 | 2398.51 | 672 | 663 | 185.2 |
| C | 5 | 250 | 409887 | 2209.91 | 672 | 663 | 185.2 |
| C | 12 | 252 | 241329 | 1299.65 | 672 | 663 | 185.2 |
| D | 8 | 129 | 4352560 | 26367.27 | 577 | 550 | 165.1 |
| D | 6 | 239 | 926984 | 5612.93 | 577 | 550 | 165.1 |
| D | 2 | 249 | 369573 | 2235.78 | 577 | 550 | 165.1 |
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 |  |