Observation information
- date-obs: 2025-12-16
- time-obs: 22:42:38.379600000
- date-end: 2025-12-17
- time-end: 01:10:31.345600000
- obs_id: A14_009T01_9000006534
- exposure: 6955.36261445
- 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_55289cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55289cztM0_level2_quad_clean.evt
|
| Size (bytes) | 409,348,800 | 104,149,440 |
| Size | 390.4 MB
| 99.3 MB
|
| Events in quadrant A | 3,490,534 | 671,314 |
| Events in quadrant B | 3,427,221 | 724,878 |
| Events in quadrant C | 3,365,252 | 653,559 |
| Events in quadrant D | 4,305,807 | 599,687 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15999 | 2 |
| B | 0 | 15690 | 2 |
| C | 0 | 15580 | 2 |
| D | 0 | 17973 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7243 | 116 | 1.601546% |
| B | 7244 | 110 | 1.518498% |
| C | 7244 | 53 | 0.731640% |
| D | 7244 | 248 | 3.423523% |
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 | 8873 | 7246 | 71 | 71 | 0.80% | 0.98% |  |
| B | 8874 | 7247 | 24 | 24 | 0.27% | 0.33% |  |
| C | 8874 | 7247 | 25 | 25 | 0.28% | 0.34% |  |
| D | 8874 | 7247 | 164 | 164 | 1.85% | 2.26% |  |
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 | 398558 | 2138.47 | 759 | 740 | 186.0 |
| A | 4 | 205 | 35843 | 188.7 | 759 | 740 | 186.0 |
| A | 0 | 8 | 34744 | 182.79 | 759 | 740 | 186.0 |
| B | 7 | 252 | 170616 | 1041.77 | 758 | 730 | 163.1 |
| B | 2 | 249 | 65049 | 394.41 | 758 | 730 | 163.1 |
| B | 0 | 199 | 52185 | 315.53 | 758 | 730 | 163.1 |
| C | 13 | 3 | 152023 | 731.61 | 751 | 742 | 206.8 |
| C | 12 | 250 | 114480 | 550.05 | 751 | 742 | 206.8 |
| C | 12 | 252 | 35795 | 169.52 | 751 | 742 | 206.8 |
| D | 7 | 70 | 560280 | 2685.37 | 735 | 702 | 208.4 |
| D | 11 | 129 | 467377 | 2239.54 | 735 | 702 | 208.4 |
| D | 2 | 31 | 136408 | 651.24 | 735 | 702 | 208.4 |
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 |  |