Observation information
- date-obs: 2025-12-16
- time-obs: 01:58:58.537700000
- date-end: 2025-12-16
- time-end: 04:23:31.512000000
- obs_id: A14_009T01_9000006534
- exposure: 7619.28510368
- 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_55276cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55276cztM0_level2_quad_clean.evt
|
| Size (bytes) | 570,407,040 | 116,308,800 |
| Size | 544.0 MB
| 110.9 MB
|
| Events in quadrant A | 4,220,551 | 761,294 |
| Events in quadrant B | 4,915,749 | 802,086 |
| Events in quadrant C | 4,710,393 | 733,459 |
| Events in quadrant D | 6,622,466 | 646,752 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 170 | 0 |
| B | 0 | 170 | 0 |
| C | 0 | 170 | 0 |
| D | 0 | 170 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18788 | 1 |
| B | 0 | 20792 | 2 |
| C | 0 | 20080 | 1 |
| D | 0 | 25751 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8313 | 154 | 1.852520% |
| B | 8312 | 377 | 4.535611% |
| C | 8313 | 223 | 2.682545% |
| D | 8313 | 780 | 9.382894% |
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 | 8673 | 8314 | 47 | 47 | 0.54% | 0.57% |  |
| B | 8672 | 8313 | 96 | 96 | 1.11% | 1.15% |  |
| C | 8673 | 8314 | 136 | 136 | 1.57% | 1.64% |  |
| D | 8673 | 8314 | 676 | 676 | 7.79% | 8.13% |  |
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 | 12 | 115 | 386189 | 1784.26 | 892 | 867 | 216.0 |
| A | 0 | 8 | 194007 | 894.35 | 892 | 867 | 216.0 |
| A | 4 | 3 | 71656 | 327.79 | 892 | 867 | 216.0 |
| B | 1 | 159 | 571807 | 2970.16 | 883 | 848 | 192.2 |
| B | 2 | 249 | 388481 | 2016.49 | 883 | 848 | 192.2 |
| B | 4 | 81 | 341758 | 1773.43 | 883 | 848 | 192.2 |
| C | 15 | 147 | 613862 | 2571.14 | 876 | 868 | 238.4 |
| C | 13 | 3 | 260888 | 1090.63 | 876 | 868 | 238.4 |
| C | 12 | 252 | 101229 | 420.95 | 876 | 868 | 238.4 |
| D | 7 | 70 | 1288701 | 5413.63 | 845 | 809 | 237.9 |
| D | 11 | 129 | 915209 | 3843.67 | 845 | 809 | 237.9 |
| D | 11 | 176 | 367313 | 1540.59 | 845 | 809 | 237.9 |
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 |  |