Observation information
- date-obs: 2025-12-16
- time-obs: 19:16:12.405000000
- date-end: 2025-12-16
- time-end: 21:42:25.374800000
- obs_id: A14_009T01_9000006534
- exposure: 6217.82398254
- 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_55287cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55287cztM0_level2_quad_clean.evt
|
| Size (bytes) | 387,912,960 | 95,529,600 |
| Size | 369.9 MB
| 91.1 MB
|
| Events in quadrant A | 2,950,849 | 625,032 |
| Events in quadrant B | 3,466,252 | 660,648 |
| Events in quadrant C | 3,429,068 | 595,479 |
| Events in quadrant D | 4,008,944 | 559,348 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13720 | 3 |
| B | 0 | 15144 | 4 |
| C | 0 | 15016 | 3 |
| D | 0 | 16554 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6474 | 51 | 0.787766% |
| B | 6473 | 213 | 3.290592% |
| C | 6473 | 150 | 2.317318% |
| D | 6473 | 190 | 2.935270% |
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 | 8774 | 6476 | 29 | 29 | 0.33% | 0.45% |  |
| B | 8773 | 6475 | 120 | 120 | 1.37% | 1.85% |  |
| C | 8773 | 6475 | 120 | 120 | 1.37% | 1.85% |  |
| D | 8773 | 6475 | 155 | 155 | 1.77% | 2.39% |  |
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 | 116131 | 685.5 | 681 | 665 | 168.4 |
| A | 4 | 205 | 68764 | 404.29 | 681 | 665 | 168.4 |
| A | 4 | 3 | 47044 | 275.35 | 681 | 665 | 168.4 |
| B | 2 | 249 | 343000 | 2397.77 | 670 | 645 | 142.8 |
| B | 10 | 247 | 154661 | 1078.69 | 670 | 645 | 142.8 |
| B | 0 | 199 | 151156 | 1054.14 | 670 | 645 | 142.8 |
| C | 13 | 3 | 386651 | 2086.43 | 669 | 663 | 185.0 |
| C | 12 | 252 | 182926 | 985.21 | 669 | 663 | 185.0 |
| C | 12 | 249 | 113825 | 611.69 | 669 | 663 | 185.0 |
| D | 11 | 129 | 824448 | 4441.07 | 660 | 634 | 185.5 |
| D | 11 | 176 | 144463 | 775.36 | 660 | 634 | 185.5 |
| D | 2 | 31 | 71569 | 382.4 | 660 | 634 | 185.5 |
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 |  |