Observation information
- date-obs: 2025-12-13
- time-obs: 04:43:09.630000000
- date-end: 2025-12-13
- time-end: 07:01:28.050100000
- obs_id: A14_009T01_9000006534
- exposure: 7147.89761186
- 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_55233cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55233cztM0_level2_quad_clean.evt
|
| Size (bytes) | 587,134,080 | 114,791,040 |
| Size | 559.9 MB
| 109.5 MB
|
| Events in quadrant A | 3,804,894 | 757,422 |
| Events in quadrant B | 3,793,148 | 817,883 |
| Events in quadrant C | 7,648,106 | 641,920 |
| Events in quadrant D | 5,843,115 | 681,712 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 166 | 0 |
| B | 0 | 166 | 0 |
| C | 0 | 166 | 0 |
| D | 0 | 166 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17769 | 0 |
| B | 0 | 17731 | 0 |
| C | 0 | 28370 | 0 |
| D | 0 | 23131 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8299 | 81 | 0.976021% |
| B | 8300 | 135 | 1.626506% |
| C | 8300 | 1291 | 15.554217% |
| D | 8300 | 306 | 3.686747% |
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 | 8299 | 8299 | 58 | 58 | 0.70% | 0.70% |  |
| B | 8300 | 8300 | 28 | 28 | 0.34% | 0.34% |  |
| C | 8300 | 8300 | 1014 | 1014 | 12.22% | 12.22% |  |
| D | 8300 | 8300 | 273 | 273 | 3.29% | 3.29% |  |
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 | 0 | 8 | 239915 | 1102.22 | 883 | 857 | 216.9 |
| A | 4 | 3 | 29299 | 131.14 | 883 | 857 | 216.9 |
| A | 4 | 205 | 25610 | 114.13 | 883 | 857 | 216.9 |
| B | 10 | 247 | 160805 | 840.8 | 880 | 844 | 190.2 |
| B | 4 | 81 | 66695 | 346.13 | 880 | 844 | 190.2 |
| B | 10 | 245 | 41480 | 213.59 | 880 | 844 | 190.2 |
| C | 12 | 254 | 2906765 | 13157.83 | 807 | 797 | 220.9 |
| C | 13 | 3 | 462742 | 2091.62 | 807 | 797 | 220.9 |
| C | 10 | 22 | 411701 | 1860.52 | 807 | 797 | 220.9 |
| D | 11 | 129 | 1719078 | 7160.76 | 853 | 817 | 240.0 |
| D | 2 | 249 | 397830 | 1654.53 | 853 | 817 | 240.0 |
| D | 10 | 181 | 148656 | 616.11 | 853 | 817 | 240.0 |
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 |  |