Observation information
- date-obs: 2026-02-13
- time-obs: 04:39:14.953900000
- date-end: 2026-02-13
- time-end: 07:05:35.931900000
- obs_id: A14_083T04_9000006550
- exposure: 6571.16745651
- 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_56155cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56155cztM0_level2_quad_clean.evt
|
| Size (bytes) | 440,841,600 | 101,594,880 |
| Size | 420.4 MB
| 96.9 MB
|
| Events in quadrant A | 4,524,079 | 649,192 |
| Events in quadrant B | 3,562,451 | 708,495 |
| Events in quadrant C | 3,220,643 | 640,798 |
| Events in quadrant D | 4,467,610 | 590,689 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18316 | 6 |
| B | 0 | 15482 | 2 |
| C | 0 | 14817 | 2 |
| D | 0 | 18078 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6989 | 367 | 5.251109% |
| B | 6992 | 186 | 2.660183% |
| C | 6991 | 119 | 1.702189% |
| D | 6991 | 260 | 3.719067% |
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 | 8781 | 6992 | 215 | 215 | 2.45% | 3.07% |  |
| B | 8782 | 6994 | 17 | 17 | 0.19% | 0.24% |  |
| C | 8781 | 6993 | 9 | 9 | 0.10% | 0.13% |  |
| D | 8781 | 6993 | 142 | 142 | 1.62% | 2.03% |  |
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 | 559562 | 2988.44 | 754 | 735 | 187.0 |
| A | 15 | 32 | 485663 | 2593.25 | 754 | 735 | 187.0 |
| A | 3 | 14 | 167418 | 891.37 | 754 | 735 | 187.0 |
| B | 0 | 153 | 125942 | 764.5 | 760 | 731 | 163.8 |
| B | 9 | 254 | 117123 | 710.66 | 760 | 731 | 163.8 |
| B | 1 | 255 | 74266 | 448.98 | 760 | 731 | 163.8 |
| C | 12 | 252 | 87699 | 422.52 | 758 | 751 | 205.8 |
| C | 15 | 230 | 62782 | 301.44 | 758 | 751 | 205.8 |
| C | 12 | 249 | 58944 | 282.79 | 758 | 751 | 205.8 |
| D | 8 | 240 | 247711 | 1180.09 | 744 | 712 | 209.3 |
| D | 11 | 129 | 224003 | 1066.82 | 744 | 712 | 209.3 |
| D | 8 | 160 | 223133 | 1062.67 | 744 | 712 | 209.3 |
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 |  |