Observation information
- date-obs: 2025-12-19
- time-obs: 15:17:18.872400000
- date-end: 2025-12-19
- time-end: 17:23:49.856100000
- obs_id: A14_009T01_9000006534
- exposure: 6153.24793303
- 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_55329cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55329cztM0_level2_quad_clean.evt
|
| Size (bytes) | 411,770,880 | 96,690,240 |
| Size | 392.7 MB
| 92.2 MB
|
| Events in quadrant A | 4,129,580 | 623,879 |
| Events in quadrant B | 3,196,775 | 678,253 |
| Events in quadrant C | 3,633,330 | 595,849 |
| Events in quadrant D | 3,779,545 | 578,626 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16833 | 1 |
| B | 0 | 14288 | 1 |
| C | 0 | 15491 | 1 |
| D | 0 | 15689 | 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 | 6466 | 291 | 4.500464% |
| B | 6466 | 146 | 2.257965% |
| C | 6466 | 248 | 3.835447% |
| D | 6467 | 163 | 2.520489% |
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 | 7591 | 6467 | 195 | 195 | 2.57% | 3.02% |  |
| B | 7591 | 6467 | 51 | 51 | 0.67% | 0.79% |  |
| C | 7591 | 6467 | 181 | 181 | 2.38% | 2.80% |  |
| D | 7592 | 6468 | 122 | 122 | 1.61% | 1.89% |  |
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 | 78 | 514159 | 3013.31 | 687 | 671 | 170.4 |
| A | 3 | 14 | 338506 | 1982.52 | 687 | 671 | 170.4 |
| A | 0 | 8 | 320287 | 1875.61 | 687 | 671 | 170.4 |
| B | 0 | 199 | 170290 | 1154.67 | 681 | 656 | 146.9 |
| B | 5 | 185 | 167217 | 1133.76 | 681 | 656 | 146.9 |
| B | 10 | 247 | 50817 | 341.44 | 681 | 656 | 146.9 |
| C | 13 | 3 | 331344 | 1792.95 | 668 | 658 | 184.4 |
| C | 9 | 38 | 262122 | 1417.64 | 668 | 658 | 184.4 |
| C | 6 | 13 | 222196 | 1201.16 | 668 | 658 | 184.4 |
| D | 11 | 129 | 672005 | 3502.73 | 681 | 653 | 191.7 |
| D | 11 | 176 | 110975 | 575.6 | 681 | 653 | 191.7 |
| D | 2 | 31 | 84132 | 435.55 | 681 | 653 | 191.7 |
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 |  |