Observation information
- date-obs: 2025-12-14
- time-obs: 18:54:38.780000000
- date-end: 2025-12-14
- time-end: 21:07:49.754800000
- obs_id: A14_009T01_9000006534
- exposure: 5913.83939481
- 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_55257cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55257cztM0_level2_quad_clean.evt
|
| Size (bytes) | 395,363,520 | 94,968,000 |
| Size | 377.0 MB
| 90.6 MB
|
| Events in quadrant A | 3,201,919 | 620,103 |
| Events in quadrant B | 2,920,123 | 673,787 |
| Events in quadrant C | 4,494,845 | 570,877 |
| Events in quadrant D | 3,521,689 | 565,633 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14192 | 2 |
| B | 0 | 13596 | 2 |
| C | 0 | 17855 | 2 |
| D | 0 | 14871 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6380 | 83 | 1.300940% |
| B | 6380 | 58 | 0.909091% |
| C | 6380 | 467 | 7.319749% |
| D | 6380 | 102 | 1.598746% |
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 | 7545 | 6381 | 49 | 49 | 0.65% | 0.77% |  |
| B | 7545 | 6381 | 28 | 28 | 0.37% | 0.44% |  |
| C | 7545 | 6381 | 467 | 467 | 6.19% | 7.32% |  |
| D | 7545 | 6381 | 60 | 60 | 0.80% | 0.94% |  |
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 | 273408 | 1642.79 | 670 | 654 | 166.0 |
| A | 4 | 249 | 84025 | 502.14 | 670 | 654 | 166.0 |
| A | 7 | 243 | 57801 | 344.2 | 670 | 654 | 166.0 |
| B | 5 | 185 | 109774 | 767.62 | 669 | 647 | 142.2 |
| B | 10 | 245 | 65188 | 453.99 | 669 | 647 | 142.2 |
| B | 2 | 249 | 31149 | 214.56 | 669 | 647 | 142.2 |
| C | 13 | 3 | 1398689 | 7821.24 | 650 | 644 | 178.7 |
| C | 14 | 80 | 176510 | 983.87 | 650 | 644 | 178.7 |
| C | 14 | 254 | 119447 | 664.63 | 650 | 644 | 178.7 |
| D | 7 | 96 | 232055 | 1249.74 | 657 | 629 | 185.2 |
| D | 5 | 38 | 229391 | 1235.35 | 657 | 629 | 185.2 |
| D | 3 | 12 | 139406 | 749.42 | 657 | 629 | 185.2 |
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 |  |