Observation information
- date-obs: 2025-12-17
- time-obs: 12:57:11.269500000
- date-end: 2025-12-17
- time-end: 15:06:54.252200000
- obs_id: A14_009T01_9000006534
- exposure: 6008.79483372
- 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_55298cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55298cztM0_level2_quad_clean.evt
|
| Size (bytes) | 456,566,400 | 97,925,760 |
| Size | 435.4 MB
| 93.4 MB
|
| Events in quadrant A | 3,005,408 | 650,792 |
| Events in quadrant B | 3,140,286 | 690,969 |
| Events in quadrant C | 3,423,367 | 618,303 |
| Events in quadrant D | 6,803,455 | 531,970 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14052 | 1 |
| B | 0 | 14474 | 1 |
| C | 0 | 15342 | 1 |
| D | 0 | 24929 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6788 | 58 | 0.854449% |
| B | 6788 | 84 | 1.237478% |
| C | 6789 | 115 | 1.693917% |
| D | 6788 | 928 | 13.671184% |
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 | 7783 | 6788 | 8 | 8 | 0.10% | 0.12% |  |
| B | 7783 | 6789 | 32 | 32 | 0.41% | 0.47% |  |
| C | 7784 | 6790 | 100 | 100 | 1.28% | 1.47% |  |
| D | 7783 | 6788 | 860 | 860 | 11.05% | 12.67% |  |
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 | 7 | 7 | 37468 | 207.13 | 723 | 704 | 177.5 |
| A | 4 | 3 | 35610 | 196.67 | 723 | 704 | 177.5 |
| A | 3 | 78 | 35112 | 193.86 | 723 | 704 | 177.5 |
| B | 2 | 249 | 81362 | 530.27 | 709 | 685 | 152.1 |
| B | 0 | 199 | 75919 | 494.5 | 709 | 685 | 152.1 |
| B | 10 | 245 | 73496 | 478.57 | 709 | 685 | 152.1 |
| C | 9 | 38 | 281381 | 1461.61 | 699 | 692 | 192.0 |
| C | 13 | 3 | 241474 | 1253.81 | 699 | 692 | 192.0 |
| C | 14 | 254 | 65390 | 336.9 | 699 | 692 | 192.0 |
| D | 11 | 129 | 2825717 | 14798.51 | 673 | 646 | 190.9 |
| D | 3 | 12 | 336815 | 1760.95 | 673 | 646 | 190.9 |
| D | 6 | 239 | 325106 | 1699.61 | 673 | 646 | 190.9 |
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 |  |