Observation information
- date-obs: 2026-02-16
- time-obs: 09:19:36.304000000
- date-end: 2026-02-16
- time-end: 11:27:09.286600000
- obs_id: A14_083T04_9000006550
- exposure: 5417.67560059
- 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_56202cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56202cztM0_level2_quad_clean.evt
|
| Size (bytes) | 655,876,800 | 92,710,080 |
| Size | 625.5 MB
| 88.4 MB
|
| Events in quadrant A | 7,323,894 | 561,524 |
| Events in quadrant B | 3,739,683 | 691,743 |
| Events in quadrant C | 4,727,050 | 606,271 |
| Events in quadrant D | 7,982,021 | 492,420 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26473 | 1 |
| B | 0 | 15523 | 5 |
| C | 0 | 18667 | 1 |
| D | 0 | 28215 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6533 | 1191 | 18.230522% |
| B | 6533 | 295 | 4.515537% |
| C | 6533 | 404 | 6.183989% |
| D | 6533 | 1295 | 19.822440% |
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 | 7653 | 6533 | 981 | 981 | 12.82% | 15.02% |  |
| B | 7652 | 6532 | 101 | 101 | 1.32% | 1.55% |  |
| C | 7653 | 6533 | 291 | 291 | 3.80% | 4.45% |  |
| D | 7653 | 6533 | 1221 | 1221 | 15.95% | 18.69% |  |
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 | 1791113 | 10678.34 | 683 | 666 | 167.7 |
| A | 12 | 115 | 1082551 | 6452.43 | 683 | 666 | 167.7 |
| A | 8 | 176 | 856665 | 5105.23 | 683 | 666 | 167.7 |
| B | 5 | 185 | 471843 | 3142.35 | 708 | 686 | 149.9 |
| B | 4 | 156 | 261866 | 1741.92 | 708 | 686 | 149.9 |
| B | 10 | 247 | 41520 | 272.34 | 708 | 686 | 149.9 |
| C | 12 | 254 | 1427469 | 7600.72 | 688 | 680 | 187.7 |
| C | 12 | 252 | 346353 | 1841.45 | 688 | 680 | 187.7 |
| C | 6 | 223 | 76663 | 404.77 | 688 | 680 | 187.7 |
| D | 11 | 129 | 3936586 | 21128.44 | 657 | 627 | 186.3 |
| D | 4 | 230 | 405920 | 2175.64 | 657 | 627 | 186.3 |
| D | 2 | 249 | 251827 | 1348.46 | 657 | 627 | 186.3 |
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 |  |