Observation information
- date-obs: 2025-12-16
- time-obs: 17:44:38.416800000
- date-end: 2025-12-16
- time-end: 19:56:45.393100000
- obs_id: A14_009T01_9000006534
- exposure: 5828.79005373
- 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_55286cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55286cztM0_level2_quad_clean.evt
|
| Size (bytes) | 408,202,560 | 93,795,840 |
| Size | 389.3 MB
| 89.5 MB
|
| Events in quadrant A | 2,908,618 | 626,881 |
| Events in quadrant B | 3,721,771 | 628,741 |
| Events in quadrant C | 3,307,672 | 597,669 |
| Events in quadrant D | 4,680,123 | 545,240 |
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 | 13367 | 3 |
| B | 0 | 15782 | 3 |
| C | 0 | 14478 | 3 |
| D | 0 | 18340 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6322 | 43 | 0.680165% |
| B | 6322 | 431 | 6.817463% |
| C | 6322 | 107 | 1.692502% |
| D | 6322 | 378 | 5.979121% |
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 | 7478 | 6325 | 18 | 18 | 0.24% | 0.28% |  |
| B | 7478 | 6325 | 324 | 324 | 4.33% | 5.12% |  |
| C | 7478 | 6325 | 72 | 72 | 0.96% | 1.14% |  |
| D | 7478 | 6325 | 313 | 313 | 4.19% | 4.95% |  |
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 | 95534 | 567.06 | 676 | 660 | 167.3 |
| A | 4 | 205 | 56100 | 331.36 | 676 | 660 | 167.3 |
| A | 4 | 3 | 48320 | 284.86 | 676 | 660 | 167.3 |
| B | 10 | 14 | 920055 | 6775.25 | 638 | 614 | 135.7 |
| B | 0 | 199 | 144063 | 1057.06 | 638 | 614 | 135.7 |
| B | 5 | 185 | 56796 | 414.0 | 638 | 614 | 135.7 |
| C | 13 | 3 | 479364 | 2603.91 | 664 | 654 | 183.8 |
| C | 12 | 2 | 62585 | 336.87 | 664 | 654 | 183.8 |
| C | 14 | 254 | 41423 | 221.76 | 664 | 654 | 183.8 |
| D | 11 | 129 | 1124297 | 6139.39 | 648 | 619 | 183.0 |
| D | 11 | 176 | 285585 | 1556.96 | 648 | 619 | 183.0 |
| D | 7 | 70 | 266798 | 1454.31 | 648 | 619 | 183.0 |
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 |  |