Observation information
- date-obs: 2025-12-14
- time-obs: 17:19:39.792300000
- date-end: 2025-12-14
- time-end: 19:22:30.770700000
- obs_id: A14_009T01_9000006534
- exposure: 5872.04559034
- 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_55256cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55256cztM0_level2_quad_clean.evt
|
| Size (bytes) | 379,203,840 | 92,767,680 |
| Size | 361.6 MB
| 88.5 MB
|
| Events in quadrant A | 3,003,466 | 607,947 |
| Events in quadrant B | 2,845,835 | 651,731 |
| Events in quadrant C | 4,594,070 | 562,284 |
| Events in quadrant D | 3,107,600 | 551,678 |
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 | 13558 | 1 |
| B | 0 | 13266 | 1 |
| C | 0 | 17946 | 1 |
| D | 0 | 13829 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6241 | 42 | 0.672969% |
| B | 6241 | 64 | 1.025477% |
| C | 6242 | 361 | 5.783403% |
| D | 6241 | 72 | 1.153661% |
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 | 7371 | 6242 | 19 | 19 | 0.26% | 0.30% |  |
| B | 7371 | 6242 | 22 | 22 | 0.30% | 0.35% |  |
| C | 7372 | 6243 | 266 | 266 | 3.61% | 4.26% |  |
| D | 7371 | 6242 | 51 | 51 | 0.69% | 0.82% |  |
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 | 133757 | 820.18 | 657 | 642 | 162.3 |
| A | 4 | 249 | 82793 | 506.17 | 657 | 642 | 162.3 |
| A | 7 | 243 | 50846 | 309.33 | 657 | 642 | 162.3 |
| B | 5 | 185 | 92794 | 656.64 | 652 | 629 | 140.4 |
| B | 10 | 245 | 82449 | 582.94 | 652 | 629 | 140.4 |
| B | 0 | 182 | 43314 | 304.12 | 652 | 629 | 140.4 |
| C | 13 | 3 | 1339876 | 7731.71 | 632 | 624 | 173.2 |
| C | 1 | 16 | 279356 | 1609.16 | 632 | 624 | 173.2 |
| C | 10 | 22 | 168171 | 967.28 | 632 | 624 | 173.2 |
| D | 7 | 96 | 149316 | 821.33 | 642 | 613 | 181.1 |
| D | 3 | 12 | 87949 | 482.38 | 642 | 613 | 181.1 |
| D | 5 | 38 | 77176 | 422.88 | 642 | 613 | 181.1 |
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 |  |