Observation information
- date-obs: 2025-07-13
- time-obs: 02:46:05.227200000
- date-end: 2025-07-13
- time-end: 04:49:23.206800000
- obs_id: A13_003T01_9000006486
- exposure: 22.8733953238
- sourceid: M31N2008-12a
- observer: Judhajeet
- ra_pnt: 11.37
- dec_pnt: 41.90281
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_003T01_9000006486_53139cztM0_level2.fits
| modeM0/AS1A13_003T01_9000006486_53139cztM0_level2_quad_clean.evt
|
| Size (bytes) | 868,561,920 | 75,916,800 |
| Size | 828.3 MB
| 72.4 MB
|
| Events in quadrant A | 17,192,077 | 1,976 |
| Events in quadrant B | 3,947,248 | 676,397 |
| Events in quadrant C | 6,138,926 | 567,924 |
| Events in quadrant D | 4,345,049 | 578,069 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 55602 | 1 |
| B | 0 | 16841 | 1 |
| C | 0 | 23062 | 1 |
| D | 0 | 17916 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6803 | 6787 | 99.764810% |
| B | 6803 | 232 | 3.410260% |
| C | 6803 | 747 | 10.980450% |
| D | 6803 | 279 | 4.101132% |
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 | 7397 | 6802 | 6662 | 6662 | 90.06% | 97.94% |  |
| B | 7398 | 6804 | 97 | 97 | 1.31% | 1.43% |  |
| C | 7398 | 6804 | 680 | 680 | 9.19% | 9.99% |  |
| D | 7398 | 6804 | 210 | 210 | 2.84% | 3.09% |  |
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 | 9 | 191 | 16107974 | 325772.64 | 189 | 184 | 49.4 |
| A | 0 | 8 | 212149 | 4286.89 | 189 | 184 | 49.4 |
| A | 7 | 206 | 64263 | 1295.97 | 189 | 184 | 49.4 |
| B | 2 | 249 | 431228 | 2943.71 | 688 | 664 | 146.3 |
| B | 10 | 254 | 419997 | 2866.92 | 688 | 664 | 146.3 |
| B | 4 | 81 | 119807 | 814.56 | 688 | 664 | 146.3 |
| C | 15 | 224 | 1648394 | 9167.54 | 647 | 640 | 179.7 |
| C | 0 | 240 | 944114 | 5249.17 | 647 | 640 | 179.7 |
| C | 9 | 38 | 369492 | 2052.17 | 647 | 640 | 179.7 |
| D | 8 | 176 | 424105 | 2238.58 | 667 | 639 | 189.2 |
| D | 6 | 42 | 220125 | 1160.27 | 667 | 639 | 189.2 |
| D | 1 | 0 | 201612 | 1062.41 | 667 | 639 | 189.2 |
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 |  |