Observation information
- date-obs: 2025-12-17
- time-obs: 21:17:03.205900000
- date-end: 2025-12-17
- time-end: 23:48:00.176700000
- obs_id: A14_009T01_9000006534
- exposure: 6892.69635648
- 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_55303cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55303cztM0_level2_quad_clean.evt
|
| Size (bytes) | 387,290,880 | 89,732,160 |
| Size | 369.3 MB
| 85.6 MB
|
| Events in quadrant A | 3,307,318 | 583,963 |
| Events in quadrant B | 3,158,104 | 613,827 |
| Events in quadrant C | 3,503,964 | 549,972 |
| Events in quadrant D | 3,833,606 | 491,868 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 2 |
| C | 0 | 142 | 2 |
| D | 0 | 142 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15086 | 18 |
| B | 0 | 14763 | 22 |
| C | 0 | 15837 | 20 |
| D | 0 | 16589 | 26 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 1 |
| D | 0 | 19 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6847 | 78 | 1.139185% |
| B | 6846 | 91 | 1.329243% |
| C | 6847 | 173 | 2.526654% |
| D | 6845 | 126 | 1.840760% |
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 | 7962 | 7123 | 60 | 60 | 0.75% | 0.84% |  |
| B | 7962 | 7123 | 26 | 26 | 0.33% | 0.37% |  |
| C | 7962 | 7123 | 137 | 137 | 1.72% | 1.92% |  |
| D | 7962 | 7108 | 131 | 131 | 1.65% | 1.84% |  |
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 | 346332 | 1967.98 | 707 | 688 | 175.6 |
| A | 12 | 18 | 96009 | 542.72 | 707 | 688 | 175.6 |
| A | 4 | 3 | 23635 | 130.65 | 707 | 688 | 175.6 |
| B | 7 | 252 | 85613 | 562.43 | 702 | 675 | 151.0 |
| B | 0 | 199 | 75328 | 494.33 | 702 | 675 | 151.0 |
| B | 9 | 251 | 45018 | 293.63 | 702 | 675 | 151.0 |
| C | 12 | 249 | 317991 | 1662.66 | 691 | 684 | 190.8 |
| C | 13 | 3 | 175602 | 916.56 | 691 | 684 | 190.8 |
| C | 14 | 254 | 76623 | 397.91 | 691 | 684 | 190.8 |
| D | 11 | 129 | 310849 | 1572.34 | 689 | 656 | 197.3 |
| D | 6 | 239 | 222073 | 1122.35 | 689 | 656 | 197.3 |
| D | 11 | 176 | 206871 | 1045.29 | 689 | 656 | 197.3 |
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 |  |