Observation information
- date-obs: 2025-12-17
- time-obs: 18:07:58.229600000
- date-end: 2025-12-17
- time-end: 20:18:53.204200000
- obs_id: A14_009T01_9000006534
- exposure: 6153.58255476
- sourceid: M31N 2008-12a
- observer: Judhajeet
- ra_pnt: 11.37
- dec_pnt: 41.90281
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_009T01_9000006534_55301cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55301cztM0_level2_quad_clean.evt
|
| Size (bytes) | 404,916,480 | 88,542,720 |
| Size | 386.2 MB
| 84.4 MB
|
| Events in quadrant A | 3,281,179 | 579,897 |
| Events in quadrant B | 2,937,313 | 624,114 |
| Events in quadrant C | 3,104,117 | 549,430 |
| Events in quadrant D | 5,171,091 | 483,727 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14437 | 2 |
| B | 0 | 13529 | 2 |
| C | 0 | 14181 | 2 |
| D | 0 | 19792 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6360 | 111 | 1.745283% |
| B | 6360 | 70 | 1.100629% |
| C | 6360 | 112 | 1.761006% |
| D | 6359 | 517 | 8.130209% |
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 | 7785 | 6636 | 101 | 101 | 1.30% | 1.52% |  |
| B | 7785 | 6636 | 22 | 22 | 0.28% | 0.33% |  |
| C | 7785 | 6636 | 110 | 110 | 1.41% | 1.66% |  |
| D | 7784 | 6629 | 530 | 530 | 6.81% | 8.00% |  |
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 | 0 | 8 | 455667 | 2745.35 | 671 | 654 | 165.7 |
| A | 3 | 78 | 89643 | 536.92 | 671 | 654 | 165.7 |
| A | 7 | 7 | 35746 | 211.73 | 671 | 654 | 165.7 |
| B | 0 | 199 | 113025 | 782.71 | 669 | 645 | 143.6 |
| B | 2 | 249 | 33024 | 225.52 | 669 | 645 | 143.6 |
| B | 1 | 159 | 31712 | 216.38 | 669 | 645 | 143.6 |
| C | 13 | 3 | 267738 | 1458.28 | 662 | 655 | 183.1 |
| C | 14 | 254 | 106499 | 577.91 | 662 | 655 | 183.1 |
| C | 12 | 2 | 80342 | 435.09 | 662 | 655 | 183.1 |
| D | 11 | 129 | 1638957 | 9016.61 | 640 | 615 | 181.7 |
| D | 11 | 176 | 373846 | 2054.07 | 640 | 615 | 181.7 |
| D | 6 | 239 | 360194 | 1978.94 | 640 | 615 | 181.7 |
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 |  |