Observation information
- date-obs: 2025-12-22
- time-obs: 11:02:30.337400000
- date-end: 2025-12-22
- time-end: 13:00:20.321700000
- obs_id: A14_009T01_9000006534
- exposure: 5425.89265746
- 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_55371cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55371cztM0_level2_quad_clean.evt
|
| Size (bytes) | 507,525,120 | 86,633,280 |
| Size | 484.0 MB
| 82.6 MB
|
| Events in quadrant A | 6,031,667 | 546,313 |
| Events in quadrant B | 2,925,197 | 620,610 |
| Events in quadrant C | 6,178,497 | 505,753 |
| Events in quadrant D | 3,185,888 | 530,907 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22017 | 1 |
| B | 0 | 13034 | 1 |
| C | 0 | 22540 | 1 |
| D | 0 | 13683 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6005 | 635 | 10.574521% |
| B | 6006 | 88 | 1.465201% |
| C | 6006 | 661 | 11.005661% |
| D | 6005 | 65 | 1.082431% |
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 | 7070 | 6005 | 547 | 547 | 7.74% | 9.11% |  |
| B | 7071 | 6007 | 40 | 40 | 0.57% | 0.67% |  |
| C | 7071 | 6007 | 637 | 637 | 9.01% | 10.60% |  |
| D | 7070 | 6005 | 35 | 35 | 0.50% | 0.58% |  |
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 | 159 | 2888169 | 18338.56 | 627 | 612 | 157.5 |
| A | 0 | 8 | 292535 | 1853.97 | 627 | 612 | 157.5 |
| A | 12 | 115 | 287790 | 1823.84 | 627 | 612 | 157.5 |
| B | 5 | 185 | 249432 | 1846.59 | 628 | 607 | 134.7 |
| B | 0 | 199 | 76787 | 565.35 | 628 | 607 | 134.7 |
| B | 10 | 247 | 43403 | 317.6 | 628 | 607 | 134.7 |
| C | 9 | 38 | 3631350 | 21994.12 | 598 | 590 | 165.1 |
| C | 13 | 3 | 123290 | 743.28 | 598 | 590 | 165.1 |
| C | 12 | 250 | 25787 | 152.64 | 598 | 590 | 165.1 |
| D | 2 | 249 | 170745 | 960.83 | 623 | 595 | 177.1 |
| D | 12 | 8 | 148931 | 837.65 | 623 | 595 | 177.1 |
| D | 10 | 181 | 121011 | 679.98 | 623 | 595 | 177.1 |
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 |  |