Observation information
- date-obs: 2026-02-14
- time-obs: 12:19:30.686300000
- date-end: 2026-02-14
- time-end: 14:20:06.669500000
- obs_id: A14_083T04_9000006550
- exposure: 4266.17039484
- 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_56174cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56174cztM0_level2_quad_clean.evt
|
| Size (bytes) | 568,402,560 | 85,322,880 |
| Size | 542.1 MB
| 81.4 MB
|
| Events in quadrant A | 8,788,454 | 421,735 |
| Events in quadrant B | 3,890,511 | 639,210 |
| Events in quadrant C | 4,657,107 | 551,987 |
| Events in quadrant D | 3,224,127 | 538,646 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 30357 | 1 |
| B | 0 | 15976 | 1 |
| C | 0 | 18688 | 1 |
| D | 0 | 13970 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6186 | 2095 | 33.866796% |
| B | 6187 | 171 | 2.763860% |
| C | 6187 | 379 | 6.125748% |
| D | 6187 | 104 | 1.680944% |
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 | 7235 | 6186 | 1642 | 1642 | 22.70% | 26.54% |  |
| B | 7237 | 6188 | 58 | 58 | 0.80% | 0.94% |  |
| C | 7237 | 6188 | 301 | 301 | 4.16% | 4.86% |  |
| D | 7237 | 6188 | 40 | 40 | 0.55% | 0.65% |  |
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 | 3355527 | 24658.05 | 550 | 538 | 136.1 |
| A | 12 | 115 | 1398314 | 10273.19 | 550 | 538 | 136.1 |
| A | 8 | 176 | 717887 | 5272.28 | 550 | 538 | 136.1 |
| B | 15 | 52 | 534526 | 3881.16 | 652 | 630 | 137.6 |
| B | 4 | 171 | 172793 | 1251.54 | 652 | 630 | 137.6 |
| B | 5 | 185 | 160001 | 1158.55 | 652 | 630 | 137.6 |
| C | 9 | 38 | 1076035 | 6265.98 | 623 | 615 | 171.6 |
| C | 12 | 254 | 987667 | 5751.1 | 623 | 615 | 171.6 |
| C | 14 | 254 | 90438 | 523.36 | 623 | 615 | 171.6 |
| D | 11 | 129 | 147603 | 820.22 | 636 | 607 | 179.2 |
| D | 2 | 249 | 114748 | 636.89 | 636 | 607 | 179.2 |
| D | 8 | 240 | 95330 | 528.54 | 636 | 607 | 179.2 |
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 |  |