Observation information
- date-obs: 2025-12-15
- time-obs: 15:53:35.617900000
- date-end: 2025-12-15
- time-end: 18:01:13.600500000
- obs_id: A14_009T01_9000006534
- exposure: 6259.2132284
- 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_55270cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55270cztM0_level2_quad_clean.evt
|
| Size (bytes) | 395,948,160 | 97,064,640 |
| Size | 377.6 MB
| 92.6 MB
|
| Events in quadrant A | 4,165,932 | 619,082 |
| Events in quadrant B | 3,232,870 | 678,998 |
| Events in quadrant C | 3,238,387 | 608,579 |
| Events in quadrant D | 3,507,342 | 573,653 |
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 | 17036 | 2 |
| B | 0 | 14423 | 1 |
| C | 0 | 14550 | 1 |
| D | 0 | 15110 | 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 | 6582 | 286 | 4.345184% |
| B | 6582 | 88 | 1.336980% |
| C | 6583 | 104 | 1.579827% |
| D | 6583 | 114 | 1.731733% |
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 | 7657 | 6583 | 212 | 212 | 2.77% | 3.22% |  |
| B | 7657 | 6583 | 14 | 14 | 0.18% | 0.21% |  |
| C | 7658 | 6584 | 53 | 53 | 0.69% | 0.80% |  |
| D | 7658 | 6584 | 70 | 70 | 0.91% | 1.06% |  |
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 | 764372 | 4534.45 | 687 | 671 | 168.4 |
| A | 3 | 14 | 543191 | 3221.2 | 687 | 671 | 168.4 |
| A | 12 | 115 | 79511 | 468.11 | 687 | 671 | 168.4 |
| B | 7 | 0 | 201716 | 1353.64 | 690 | 665 | 148.5 |
| B | 4 | 81 | 72053 | 480.64 | 690 | 665 | 148.5 |
| B | 5 | 185 | 62120 | 413.76 | 690 | 665 | 148.5 |
| C | 13 | 3 | 155562 | 825.88 | 683 | 678 | 187.5 |
| C | 14 | 254 | 100278 | 531.09 | 683 | 678 | 187.5 |
| C | 12 | 250 | 58366 | 307.61 | 683 | 678 | 187.5 |
| D | 11 | 129 | 205855 | 1073.05 | 683 | 653 | 191.2 |
| D | 6 | 42 | 198509 | 1034.63 | 683 | 653 | 191.2 |
| D | 7 | 96 | 131776 | 685.67 | 683 | 653 | 191.2 |
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 |  |