Observation information
- date-obs: 2026-02-15
- time-obs: 17:35:05.438900000
- date-end: 2026-02-15
- time-end: 19:52:19.412100000
- obs_id: A14_083T04_9000006550
- exposure: 5205.75477552
- 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_56192cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56192cztM0_level2_quad_clean.evt
|
| Size (bytes) | 827,760,960 | 90,904,320 |
| Size | 789.4 MB
| 86.7 MB
|
| Events in quadrant A | 12,637,479 | 432,698 |
| Events in quadrant B | 4,835,012 | 684,203 |
| Events in quadrant C | 5,474,695 | 575,618 |
| Events in quadrant D | 7,078,612 | 506,882 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 42992 | 0 |
| B | 0 | 19982 | 0 |
| C | 0 | 21944 | 0 |
| D | 0 | 26648 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7948 | 3294 | 41.444389% |
| B | 7948 | 239 | 3.007046% |
| C | 7949 | 613 | 7.711662% |
| D | 7949 | 819 | 10.303183% |
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 | 8234 | 8232 | 2881 | 2881 | 34.99% | 35.00% |  |
| B | 8234 | 8234 | 96 | 96 | 1.17% | 1.17% |  |
| C | 8235 | 8055 | 409 | 409 | 4.97% | 5.08% |  |
| D | 8235 | 8203 | 767 | 767 | 9.31% | 9.35% |  |
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 | 5996048 | 36292.06 | 662 | 647 | 165.2 |
| A | 7 | 64 | 1734635 | 10496.38 | 662 | 647 | 165.2 |
| A | 8 | 176 | 1487394 | 8999.75 | 662 | 647 | 165.2 |
| B | 4 | 171 | 326874 | 1856.03 | 824 | 796 | 175.7 |
| B | 0 | 171 | 279269 | 1585.06 | 824 | 796 | 175.7 |
| B | 0 | 213 | 247823 | 1406.07 | 824 | 796 | 175.7 |
| C | 12 | 254 | 1484610 | 6849.22 | 774 | 765 | 216.6 |
| C | 9 | 38 | 544712 | 2510.78 | 774 | 765 | 216.6 |
| C | 12 | 252 | 283952 | 1307.15 | 774 | 765 | 216.6 |
| D | 6 | 239 | 1409821 | 6481.16 | 768 | 735 | 217.4 |
| D | 8 | 240 | 818395 | 3760.87 | 768 | 735 | 217.4 |
| D | 11 | 129 | 409467 | 1879.98 | 768 | 735 | 217.4 |
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 |  |