Observation information
- date-obs: 2025-12-12
- time-obs: 15:01:27.171500000
- date-end: 2025-12-12
- time-end: 17:10:42.153900000
- obs_id: A14_009T01_9000006534
- exposure: 5828.05883205
- 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_55225cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55225cztM0_level2_quad_clean.evt
|
| Size (bytes) | 543,844,800 | 94,167,360 |
| Size | 518.7 MB
| 89.8 MB
|
| Events in quadrant A | 3,209,779 | 644,181 |
| Events in quadrant B | 3,465,965 | 678,671 |
| Events in quadrant C | 6,235,599 | 526,533 |
| Events in quadrant D | 6,690,651 | 526,785 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14558 | 1 |
| B | 0 | 15430 | 1 |
| C | 0 | 23459 | 1 |
| D | 0 | 24546 | 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 | 6815 | 65 | 0.953778% |
| B | 6816 | 122 | 1.789906% |
| C | 6816 | 1078 | 15.815728% |
| D | 6815 | 849 | 12.457814% |
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 | 7755 | 6816 | 49 | 49 | 0.63% | 0.72% |  |
| B | 7756 | 6816 | 72 | 72 | 0.93% | 1.06% |  |
| C | 7756 | 6817 | 988 | 988 | 12.74% | 14.49% |  |
| D | 7755 | 6815 | 767 | 767 | 9.89% | 11.25% |  |
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 | 4 | 205 | 132798 | 744.26 | 710 | 692 | 177.5 |
| A | 0 | 8 | 127965 | 717.03 | 710 | 692 | 177.5 |
| A | 4 | 3 | 73162 | 408.28 | 710 | 692 | 177.5 |
| B | 10 | 245 | 192059 | 1288.72 | 698 | 674 | 148.5 |
| B | 5 | 236 | 137137 | 918.89 | 698 | 674 | 148.5 |
| B | 10 | 247 | 114956 | 769.53 | 698 | 674 | 148.5 |
| C | 13 | 3 | 1241892 | 7068.59 | 639 | 633 | 175.6 |
| C | 12 | 252 | 1006950 | 5730.67 | 639 | 633 | 175.6 |
| C | 12 | 254 | 796104 | 4529.96 | 639 | 633 | 175.6 |
| D | 2 | 249 | 1937298 | 10367.98 | 658 | 629 | 186.8 |
| D | 11 | 129 | 1369901 | 7330.41 | 658 | 629 | 186.8 |
| D | 5 | 38 | 234745 | 1253.34 | 658 | 629 | 186.8 |
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 |  |