Observation information
- date-obs: 2026-02-18
- time-obs: 01:17:19.966400000
- date-end: 2026-02-18
- time-end: 03:17:04.948900000
- obs_id: A14_083T04_9000006550
- exposure: 3762.53708076
- 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_56226cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56226cztM0_level2_quad_clean.evt
|
| Size (bytes) | 669,159,360 | 79,416,000 |
| Size | 638.2 MB
| 75.7 MB
|
| Events in quadrant A | 11,156,367 | 344,265 |
| Events in quadrant B | 5,052,594 | 579,599 |
| Events in quadrant C | 4,069,269 | 527,899 |
| Events in quadrant D | 4,000,100 | 509,912 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 37532 | 1 |
| B | 0 | 19368 | 1 |
| C | 0 | 16825 | 1 |
| D | 0 | 16474 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6340 | 2771 | 43.706625% |
| B | 6340 | 694 | 10.946372% |
| C | 6340 | 471 | 7.429022% |
| D | 6340 | 234 | 3.690852% |
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 | 7185 | 6341 | 2785 | 2785 | 38.76% | 43.92% |  |
| B | 7185 | 6341 | 499 | 499 | 6.95% | 7.87% |  |
| C | 7185 | 6341 | 502 | 502 | 6.99% | 7.92% |  |
| D | 7185 | 6341 | 196 | 196 | 2.73% | 3.09% |  |
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 | 15 | 32 | 2776926 | 20456.81 | 535 | 520 | 135.7 |
| A | 12 | 115 | 2771713 | 20418.4 | 535 | 520 | 135.7 |
| A | 8 | 176 | 2530882 | 18643.93 | 535 | 520 | 135.7 |
| B | 4 | 171 | 656570 | 4883.93 | 634 | 611 | 134.3 |
| B | 1 | 255 | 630086 | 4686.74 | 634 | 611 | 134.3 |
| B | 5 | 185 | 565345 | 4204.71 | 634 | 611 | 134.3 |
| C | 9 | 38 | 1253488 | 7115.13 | 644 | 638 | 176.1 |
| C | 12 | 252 | 148496 | 839.71 | 644 | 638 | 176.1 |
| C | 12 | 254 | 85764 | 483.44 | 644 | 638 | 176.1 |
| D | 8 | 129 | 761426 | 4209.52 | 635 | 605 | 180.7 |
| D | 6 | 239 | 324126 | 1790.0 | 635 | 605 | 180.7 |
| D | 2 | 120 | 149779 | 825.36 | 635 | 605 | 180.7 |
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 |  |