Observation information
- date-obs: 2026-02-18
- time-obs: 16:48:29.833300000
- date-end: 2026-02-18
- time-end: 18:54:09.808100000
- obs_id: A14_083T04_9000006550
- exposure: 4240.84115559
- 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_56236cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56236cztM0_level2_quad_clean.evt
|
| Size (bytes) | 909,221,760 | 89,081,280 |
| Size | 867.1 MB
| 85.0 MB
|
| Events in quadrant A | 13,022,036 | 402,189 |
| Events in quadrant B | 5,280,695 | 721,803 |
| Events in quadrant C | 5,878,865 | 546,748 |
| Events in quadrant D | 8,891,553 | 501,708 |
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 | 43939 | 0 |
| B | 0 | 20854 | 0 |
| C | 0 | 22863 | 0 |
| D | 0 | 31648 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7540 | 3461 | 45.901857% |
| B | 7540 | 426 | 5.649867% |
| C | 7540 | 1401 | 18.580902% |
| D | 7540 | 1656 | 21.962865% |
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 | 7540 | 7540 | 3323 | 3323 | 44.07% | 44.07% |  |
| B | 7540 | 7540 | 265 | 265 | 3.51% | 3.51% |  |
| C | 7540 | 7540 | 495 | 495 | 6.56% | 6.56% |  |
| D | 7540 | 7540 | 1606 | 1606 | 21.30% | 21.30% |  |
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 | 8 | 176 | 5635029 | 34544.31 | 644 | 628 | 163.1 |
| A | 15 | 32 | 3845804 | 23574.63 | 644 | 628 | 163.1 |
| A | 7 | 64 | 682177 | 4178.55 | 644 | 628 | 163.1 |
| B | 4 | 171 | 908883 | 5539.11 | 765 | 739 | 164.0 |
| B | 5 | 185 | 396615 | 2414.6 | 765 | 739 | 164.0 |
| B | 10 | 247 | 213160 | 1295.64 | 765 | 739 | 164.0 |
| C | 13 | 3 | 2472953 | 13936.17 | 638 | 631 | 177.4 |
| C | 12 | 252 | 393842 | 2216.48 | 638 | 631 | 177.4 |
| C | 12 | 254 | 121624 | 682.02 | 638 | 631 | 177.4 |
| D | 8 | 129 | 4705104 | 24850.19 | 662 | 633 | 189.3 |
| D | 11 | 129 | 434210 | 2290.26 | 662 | 633 | 189.3 |
| D | 2 | 249 | 275145 | 1450.04 | 662 | 633 | 189.3 |
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 |  |