Observation information
- date-obs: 2025-12-20
- time-obs: 01:20:39.792800000
- date-end: 2025-12-20
- time-end: 03:47:06.773600000
- obs_id: A14_009T01_9000006534
- exposure: 8589.93962073
- 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_55335cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55335cztM0_level2_quad_clean.evt
|
| Size (bytes) | 517,190,400 | 126,046,080 |
| Size | 493.2 MB
| 120.2 MB
|
| Events in quadrant A | 4,433,380 | 813,671 |
| Events in quadrant B | 4,038,227 | 871,226 |
| Events in quadrant C | 5,033,696 | 781,312 |
| Events in quadrant D | 4,957,094 | 740,399 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 176 | 0 |
| B | 0 | 176 | 0 |
| C | 0 | 176 | 0 |
| D | 0 | 176 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19789 | 0 |
| B | 0 | 18769 | 0 |
| C | 0 | 21181 | 0 |
| D | 0 | 20982 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8787 | 31 | 0.352794% |
| B | 8787 | 48 | 0.546262% |
| C | 8788 | 117 | 1.331361% |
| D | 8788 | 82 | 0.933091% |
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 | 8787 | 8787 | 12 | 12 | 0.14% | 0.14% |  |
| B | 8787 | 8787 | 16 | 16 | 0.18% | 0.18% |  |
| C | 8788 | 8788 | 63 | 63 | 0.72% | 0.72% |  |
| D | 8788 | 8788 | 65 | 65 | 0.74% | 0.74% |  |
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 | 337880 | 1465.57 | 932 | 907 | 229.9 |
| A | 3 | 78 | 233446 | 1011.36 | 932 | 907 | 229.9 |
| A | 3 | 14 | 73065 | 313.83 | 932 | 907 | 229.9 |
| B | 0 | 199 | 155142 | 773.15 | 927 | 893 | 199.5 |
| B | 10 | 247 | 140367 | 699.09 | 927 | 893 | 199.5 |
| B | 5 | 185 | 37785 | 184.91 | 927 | 893 | 199.5 |
| C | 9 | 38 | 1042455 | 4140.27 | 918 | 909 | 251.6 |
| C | 13 | 3 | 159766 | 631.48 | 918 | 909 | 251.6 |
| C | 12 | 252 | 70161 | 275.29 | 918 | 909 | 251.6 |
| D | 11 | 129 | 308054 | 1197.55 | 911 | 871 | 256.5 |
| D | 3 | 12 | 196559 | 762.89 | 911 | 871 | 256.5 |
| D | 7 | 96 | 188624 | 731.96 | 911 | 871 | 256.5 |
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 |  |