Observation information
- date-obs: 2025-12-21
- time-obs: 17:33:48.473800000
- date-end: 2025-12-21
- time-end: 19:40:00.450400000
- obs_id: A14_009T01_9000006534
- exposure: 6202.96050113
- 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_55360cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55360cztM0_level2_quad_clean.evt
|
| Size (bytes) | 381,116,160 | 94,947,840 |
| Size | 363.5 MB
| 90.5 MB
|
| Events in quadrant A | 2,957,991 | 620,119 |
| Events in quadrant B | 3,100,429 | 663,820 |
| Events in quadrant C | 3,552,169 | 588,445 |
| Events in quadrant D | 3,999,652 | 556,526 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 2 |
| D | 0 | 132 | 2 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13709 | 120 |
| B | 0 | 13906 | 156 |
| C | 0 | 15472 | 434 |
| D | 0 | 16648 | 140 |
| 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 | 6398 | 29 | 0.453267% |
| B | 6399 | 58 | 0.906392% |
| C | 6365 | 70 | 1.099764% |
| D | 6399 | 161 | 2.516018% |
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 | 7571 | 6433 | 12 | 12 | 0.16% | 0.19% |  |
| B | 7571 | 6434 | 12 | 12 | 0.16% | 0.19% |  |
| C | 7568 | 6403 | 54 | 54 | 0.71% | 0.84% |  |
| D | 7571 | 6435 | 133 | 133 | 1.76% | 2.07% |  |
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 | 105262 | 625.22 | 677 | 659 | 167.3 |
| A | 3 | 14 | 81366 | 482.39 | 677 | 659 | 167.3 |
| A | 0 | 8 | 67567 | 399.91 | 677 | 659 | 167.3 |
| B | 0 | 199 | 178223 | 1232.15 | 671 | 647 | 144.1 |
| B | 5 | 185 | 79094 | 544.32 | 671 | 647 | 144.1 |
| B | 9 | 254 | 61911 | 425.09 | 671 | 647 | 144.1 |
| C | 9 | 38 | 387187 | 2124.63 | 662 | 655 | 181.9 |
| C | 12 | 249 | 213202 | 1168.3 | 662 | 655 | 181.9 |
| C | 13 | 3 | 89723 | 489.58 | 662 | 655 | 181.9 |
| D | 11 | 176 | 424616 | 2258.96 | 662 | 633 | 187.7 |
| D | 11 | 129 | 371772 | 1977.41 | 662 | 633 | 187.7 |
| D | 2 | 31 | 250836 | 1333.07 | 662 | 633 | 187.7 |
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 |  |