Observation information
- date-obs: 2025-12-13
- time-obs: 02:53:47.765000000
- date-end: 2025-12-13
- time-end: 05:16:28.054500000
- obs_id: A14_009T01_9000006534
- exposure: 6577.23440242
- 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_55232cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55232cztM0_level2_quad_clean.evt
|
| Size (bytes) | 616,248,000 | 109,195,200 |
| Size | 587.7 MB
| 104.1 MB
|
| Events in quadrant A | 3,689,644 | 737,908 |
| Events in quadrant B | 3,964,656 | 781,497 |
| Events in quadrant C | 8,223,945 | 588,543 |
| Events in quadrant D | 6,315,603 | 644,864 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17191 | 1 |
| B | 0 | 18011 | 1 |
| C | 0 | 30175 | 2 |
| D | 0 | 24718 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7957 | 93 | 1.168782% |
| B | 7957 | 256 | 3.217293% |
| C | 7956 | 1636 | 20.563097% |
| D | 7956 | 485 | 6.096028% |
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 | 8562 | 7958 | 46 | 46 | 0.54% | 0.58% |  |
| B | 8562 | 7958 | 82 | 82 | 0.96% | 1.03% |  |
| C | 8561 | 7957 | 1253 | 1253 | 14.64% | 15.75% |  |
| D | 8561 | 7957 | 429 | 429 | 5.01% | 5.39% |  |
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 | 177743 | 838.8 | 858 | 833 | 210.9 |
| A | 4 | 205 | 57711 | 269.68 | 858 | 833 | 210.9 |
| A | 3 | 45 | 46407 | 216.08 | 858 | 833 | 210.9 |
| B | 2 | 249 | 375561 | 2048.34 | 848 | 815 | 183.0 |
| B | 10 | 247 | 167898 | 913.26 | 848 | 815 | 183.0 |
| B | 12 | 111 | 22799 | 120.16 | 848 | 815 | 183.0 |
| C | 12 | 254 | 4154205 | 19920.95 | 767 | 761 | 208.5 |
| C | 13 | 3 | 260058 | 1243.65 | 767 | 761 | 208.5 |
| C | 12 | 252 | 222770 | 1064.81 | 767 | 761 | 208.5 |
| D | 2 | 249 | 2060144 | 9040.14 | 815 | 780 | 227.8 |
| D | 11 | 129 | 757544 | 3322.02 | 815 | 780 | 227.8 |
| D | 3 | 12 | 115478 | 503.5 | 815 | 780 | 227.8 |
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 |  |