Observation information
- date-obs: 2025-12-23
- time-obs: 16:17:57.109400000
- date-end: 2025-12-23
- time-end: 18:30:24.083000000
- obs_id: A14_009T01_9000006534
- exposure: 5909.11203033
- 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_55389cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55389cztM0_level2_quad_clean.evt
|
| Size (bytes) | 463,789,440 | 97,738,560 |
| Size | 442.3 MB
| 93.2 MB
|
| Events in quadrant A | 4,656,700 | 639,889 |
| Events in quadrant B | 3,139,265 | 696,373 |
| Events in quadrant C | 3,167,275 | 625,974 |
| Events in quadrant D | 5,690,941 | 536,399 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18623 | 2 |
| B | 0 | 14291 | 2 |
| C | 0 | 14288 | 2 |
| D | 0 | 21486 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6610 | 284 | 4.296520% |
| B | 6609 | 117 | 1.770313% |
| C | 6609 | 74 | 1.119685% |
| D | 6609 | 750 | 11.348162% |
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 | 7705 | 6611 | 181 | 181 | 2.35% | 2.74% |  |
| B | 7704 | 6609 | 52 | 52 | 0.67% | 0.79% |  |
| C | 7704 | 6610 | 40 | 40 | 0.52% | 0.61% |  |
| D | 7704 | 6609 | 698 | 698 | 9.06% | 10.56% |  |
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 | 4 | 159 | 1009581 | 5682.73 | 714 | 696 | 177.5 |
| A | 0 | 8 | 572042 | 3218.21 | 714 | 696 | 177.5 |
| A | 6 | 162 | 148904 | 834.81 | 714 | 696 | 177.5 |
| B | 10 | 247 | 145952 | 957.34 | 707 | 678 | 151.7 |
| B | 5 | 185 | 138568 | 908.68 | 707 | 678 | 151.7 |
| B | 5 | 248 | 23559 | 150.78 | 707 | 678 | 151.7 |
| C | 13 | 3 | 119942 | 613.68 | 705 | 697 | 194.3 |
| C | 9 | 38 | 94935 | 484.98 | 705 | 697 | 194.3 |
| C | 14 | 254 | 81544 | 416.07 | 705 | 697 | 194.3 |
| D | 11 | 129 | 1791153 | 9622.3 | 665 | 637 | 186.1 |
| D | 8 | 160 | 463974 | 2489.99 | 665 | 637 | 186.1 |
| D | 7 | 70 | 247136 | 1324.69 | 665 | 637 | 186.1 |
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 |  |