Observation information
- date-obs: 2026-02-12
- time-obs: 16:49:35.561900000
- date-end: 2026-02-12
- time-end: 18:56:03.032600000
- obs_id: A14_083T04_9000006550
- exposure: 4951.76851469
- 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_56147cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56147cztM0_level2_quad_clean.evt
|
| Size (bytes) | 846,492,480 | 96,721,920 |
| Size | 807.3 MB
| 92.2 MB
|
| Events in quadrant A | 9,149,159 | 599,430 |
| Events in quadrant B | 4,366,945 | 743,812 |
| Events in quadrant C | 11,997,030 | 449,306 |
| Events in quadrant D | 5,240,678 | 613,333 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 32468 | 2 |
| B | 0 | 18227 | 2 |
| C | 0 | 40886 | 2 |
| D | 0 | 20905 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7508 | 1431 | 19.059670% |
| B | 7508 | 307 | 4.088972% |
| C | 7508 | 2880 | 38.359084% |
| D | 7509 | 257 | 3.422560% |
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 | 7588 | 7508 | 1397 | 1397 | 18.41% | 18.61% |  |
| B | 7588 | 7510 | 197 | 197 | 2.60% | 2.62% |  |
| C | 7588 | 7510 | 2782 | 2782 | 36.66% | 37.04% |  |
| D | 7589 | 7511 | 226 | 226 | 2.98% | 3.01% |  |
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 | 3329375 | 17898.73 | 752 | 733 | 186.0 |
| A | 7 | 64 | 1209804 | 6501.4 | 752 | 733 | 186.0 |
| A | 3 | 14 | 579014 | 3109.53 | 752 | 733 | 186.0 |
| B | 4 | 171 | 579076 | 3461.24 | 787 | 759 | 167.1 |
| B | 5 | 185 | 185226 | 1104.04 | 787 | 759 | 167.1 |
| B | 10 | 247 | 85566 | 507.57 | 787 | 759 | 167.1 |
| C | 9 | 38 | 5647846 | 32684.51 | 628 | 623 | 172.8 |
| C | 15 | 147 | 1652860 | 9562.68 | 628 | 623 | 172.8 |
| C | 15 | 148 | 1425915 | 8249.18 | 628 | 623 | 172.8 |
| D | 8 | 240 | 557699 | 2594.47 | 756 | 722 | 214.7 |
| D | 2 | 62 | 490094 | 2279.56 | 756 | 722 | 214.7 |
| D | 2 | 249 | 363582 | 1690.25 | 756 | 722 | 214.7 |
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 |  |