Observation information
- date-obs: 2026-02-13
- time-obs: 08:26:36.919900000
- date-end: 2026-02-13
- time-end: 10:31:56.898100000
- obs_id: A14_083T04_9000006550
- exposure: 5846.6891914
- 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_56157cztM0_level2.fits
| modeM0/AS1A14_083T04_9000006550_56157cztM0_level2_quad_clean.evt
|
| Size (bytes) | 449,588,160 | 96,759,360 |
| Size | 428.8 MB
| 92.3 MB
|
| Events in quadrant A | 3,860,826 | 635,179 |
| Events in quadrant B | 3,542,246 | 693,092 |
| Events in quadrant C | 2,877,771 | 619,961 |
| Events in quadrant D | 5,864,254 | 535,341 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15681 | 1 |
| B | 0 | 14848 | 1 |
| C | 0 | 13282 | 1 |
| D | 0 | 21918 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6396 | 218 | 3.408380% |
| B | 6396 | 192 | 3.001876% |
| C | 6396 | 81 | 1.266417% |
| D | 6396 | 594 | 9.287054% |
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 | 7521 | 6397 | 115 | 115 | 1.53% | 1.80% |  |
| B | 7521 | 6397 | 63 | 63 | 0.84% | 0.98% |  |
| C | 7521 | 6397 | 3 | 3 | 0.04% | 0.05% |  |
| D | 7521 | 6397 | 489 | 489 | 6.50% | 7.64% |  |
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 | 3 | 14 | 292154 | 1672.53 | 712 | 698 | 174.3 |
| A | 15 | 32 | 249167 | 1425.85 | 712 | 698 | 174.3 |
| A | 7 | 64 | 227959 | 1304.15 | 712 | 698 | 174.3 |
| B | 5 | 185 | 167630 | 1120.18 | 706 | 682 | 149.0 |
| B | 10 | 247 | 126904 | 846.92 | 706 | 682 | 149.0 |
| B | 8 | 128 | 71510 | 475.24 | 706 | 682 | 149.0 |
| C | 12 | 249 | 34903 | 181.04 | 697 | 692 | 189.0 |
| C | 6 | 223 | 30412 | 157.27 | 697 | 692 | 189.0 |
| C | 12 | 252 | 25374 | 130.61 | 697 | 692 | 189.0 |
| D | 8 | 240 | 2131106 | 11271.4 | 671 | 643 | 189.0 |
| D | 8 | 160 | 337866 | 1784.11 | 671 | 643 | 189.0 |
| D | 11 | 129 | 166802 | 879.08 | 671 | 643 | 189.0 |
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 |  |