Observation information
- date-obs: 2026-02-17
- time-obs: 19:54:50.140500000
- date-end: 2026-02-18
- time-end: 01:35:25.963900000
- obs_id: A14_083T04_9000006550
- exposure: 8126.69726324
- 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_56225cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56225cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,057,417,280 | 187,476,480 |
| Size | 1.9 GB
| 178.8 MB
|
| Events in quadrant A | 38,707,695 | 589,688 |
| Events in quadrant B | 10,955,722 | 1,383,208 |
| Events in quadrant C | 9,171,115 | 1,273,021 |
| Events in quadrant D | 15,864,421 | 1,125,104 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 386 | 0 |
| B | 0 | 386 | 0 |
| C | 0 | 386 | 0 |
| D | 0 | 386 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128000 | 3 |
| B | 0 | 46210 | 3 |
| C | 0 | 41555 | 3 |
| D | 0 | 60887 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 18911 | 11454 | 60.567923% |
| B | 18911 | 604 | 3.193908% |
| C | 18912 | 168 | 0.888325% |
| D | 18911 | 1851 | 9.787954% |
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 | 20717 | 19159 | 11570 | 11570 | 55.85% | 60.39% |  |
| B | 20717 | 19194 | 351 | 351 | 1.69% | 1.83% |  |
| C | 20718 | 19195 | 117 | 117 | 0.56% | 0.61% |  |
| D | 20717 | 19194 | 1912 | 1912 | 9.23% | 9.96% |  |
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 | 13341438 | 38141.69 | 1401 | 1363 | 349.8 |
| A | 15 | 32 | 10419799 | 29788.19 | 1401 | 1363 | 349.8 |
| A | 8 | 176 | 8284572 | 23683.19 | 1401 | 1363 | 349.8 |
| B | 4 | 171 | 579602 | 1411.62 | 1939 | 1867 | 409.3 |
| B | 1 | 159 | 429556 | 1045.0 | 1939 | 1867 | 409.3 |
| B | 0 | 171 | 420701 | 1023.36 | 1939 | 1867 | 409.3 |
| C | 12 | 252 | 811879 | 1551.6 | 1905 | 1886 | 522.0 |
| C | 12 | 254 | 422416 | 805.55 | 1905 | 1886 | 522.0 |
| C | 6 | 223 | 137804 | 260.36 | 1905 | 1886 | 522.0 |
| D | 8 | 129 | 2646194 | 5106.7 | 1825 | 1742 | 517.8 |
| D | 6 | 239 | 1551606 | 2992.94 | 1825 | 1742 | 517.8 |
| D | 14 | 52 | 1282477 | 2473.23 | 1825 | 1742 | 517.8 |
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 |  |