Observation information
- date-obs: 2025-12-20
- time-obs: 12:14:53.703100000
- date-end: 2025-12-20
- time-end: 14:14:39.687900000
- obs_id: A14_009T01_9000006534
- exposure: 4366.84049898
- 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_55342cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55342cztM0_level2_quad_clean.evt
|
| Size (bytes) | 488,459,520 | 84,559,680 |
| Size | 465.8 MB
| 80.6 MB
|
| Events in quadrant A | 7,825,529 | 419,955 |
| Events in quadrant B | 2,826,518 | 628,274 |
| Events in quadrant C | 3,140,857 | 552,151 |
| Events in quadrant D | 3,809,123 | 529,921 |
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 M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 27617 | 1 |
| B | 0 | 13010 | 1 |
| C | 0 | 14139 | 2 |
| D | 0 | 15597 | 1 |
| 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 | 6161 | 1819 | 29.524428% |
| B | 6162 | 89 | 1.444336% |
| C | 6161 | 178 | 2.889141% |
| D | 6161 | 107 | 1.736731% |
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 | 7186 | 6162 | 1817 | 1817 | 25.29% | 29.49% |  |
| B | 7187 | 6163 | 8 | 8 | 0.11% | 0.13% |  |
| C | 7186 | 6162 | 112 | 112 | 1.56% | 1.82% |  |
| D | 7186 | 6162 | 66 | 66 | 0.92% | 1.07% |  |
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 | 12 | 115 | 5356599 | 40290.33 | 537 | 524 | 132.9 |
| A | 3 | 78 | 191096 | 1433.55 | 537 | 524 | 132.9 |
| A | 0 | 8 | 115874 | 867.7 | 537 | 524 | 132.9 |
| B | 0 | 199 | 128229 | 930.9 | 640 | 618 | 137.1 |
| B | 0 | 182 | 43984 | 316.35 | 640 | 618 | 137.1 |
| B | 9 | 254 | 39001 | 280.0 | 640 | 618 | 137.1 |
| C | 13 | 3 | 359893 | 2071.86 | 626 | 617 | 173.4 |
| C | 12 | 249 | 141415 | 811.95 | 626 | 617 | 173.4 |
| C | 12 | 252 | 85289 | 488.28 | 626 | 617 | 173.4 |
| D | 2 | 62 | 526267 | 2942.94 | 634 | 607 | 178.6 |
| D | 11 | 129 | 397751 | 2223.43 | 634 | 607 | 178.6 |
| D | 2 | 31 | 224240 | 1252.02 | 634 | 607 | 178.6 |
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 |  |