Observation information
- date-obs: 2025-12-20
- time-obs: 03:14:14.772500000
- date-end: 2025-12-20
- time-end: 09:02:51.731800000
- obs_id: A14_009T01_9000006534
- exposure: 18742.8674401
- 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_55338cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55338cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,193,336,640 | 276,626,880 |
| Size | 1.1 GB
| 263.8 MB
|
| Events in quadrant A | 9,999,705 | 1,785,919 |
| Events in quadrant B | 9,169,897 | 1,922,471 |
| Events in quadrant C | 11,869,707 | 1,667,195 |
| Events in quadrant D | 11,587,778 | 1,625,345 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 404 | 0 |
| B | 0 | 404 | 0 |
| C | 0 | 404 | 0 |
| D | 0 | 404 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 44700 | 2 |
| B | 0 | 42488 | 2 |
| C | 0 | 50153 | 2 |
| D | 0 | 48824 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 19953 | 404 | 2.024758% |
| B | 19953 | 436 | 2.185135% |
| C | 19953 | 1130 | 5.663309% |
| D | 19953 | 443 | 2.220218% |
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 | 20918 | 19955 | 167 | 167 | 0.80% | 0.84% |  |
| B | 20918 | 19955 | 55 | 55 | 0.26% | 0.28% |  |
| C | 20918 | 19955 | 657 | 657 | 3.14% | 3.29% |  |
| D | 20918 | 19955 | 300 | 300 | 1.43% | 1.50% |  |
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 | 3 | 78 | 864123 | 1651.61 | 2116 | 2061 | 522.0 |
| A | 0 | 8 | 579368 | 1106.05 | 2116 | 2061 | 522.0 |
| A | 12 | 18 | 102723 | 192.86 | 2116 | 2061 | 522.0 |
| B | 10 | 247 | 299385 | 664.23 | 2091 | 2010 | 447.7 |
| B | 0 | 199 | 295755 | 656.12 | 2091 | 2010 | 447.7 |
| B | 5 | 185 | 149433 | 329.29 | 2091 | 2010 | 447.7 |
| C | 15 | 147 | 1760521 | 3179.11 | 2031 | 2011 | 553.1 |
| C | 13 | 3 | 837707 | 1510.81 | 2031 | 2011 | 553.1 |
| C | 9 | 38 | 659541 | 1188.71 | 2031 | 2011 | 553.1 |
| D | 11 | 129 | 916443 | 1582.94 | 2057 | 1971 | 577.7 |
| D | 3 | 12 | 711653 | 1228.45 | 2057 | 1971 | 577.7 |
| D | 8 | 160 | 509573 | 878.65 | 2057 | 1971 | 577.7 |
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 |  |