Observation information
- date-obs: 2025-12-20
- time-obs: 22:07:51.626600000
- date-end: 2025-12-21
- time-end: 00:35:57.595400000
- obs_id: A14_009T01_9000006534
- exposure: 7174.46329761
- 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_55348cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55348cztM0_level2_quad_clean.evt
|
| Size (bytes) | 557,513,280 | 102,052,800 |
| Size | 531.7 MB
| 97.3 MB
|
| Events in quadrant A | 3,956,831 | 670,061 |
| Events in quadrant B | 4,046,389 | 682,820 |
| Events in quadrant C | 4,002,784 | 635,811 |
| Events in quadrant D | 7,994,997 | 531,780 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 168 | 0 |
| B | 0 | 168 | 0 |
| C | 0 | 168 | 0 |
| D | 0 | 168 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18027 | 3 |
| B | 0 | 18360 | 3 |
| C | 0 | 18297 | 3 |
| D | 0 | 29588 | 5 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8191 | 111 | 1.355146% |
| B | 8192 | 197 | 2.404785% |
| C | 8192 | 75 | 0.915527% |
| D | 8191 | 1108 | 13.527042% |
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 | 9161 | 8469 | 37 | 37 | 0.40% | 0.44% |  |
| B | 9162 | 8470 | 19 | 19 | 0.21% | 0.22% |  |
| C | 9162 | 8470 | 42 | 42 | 0.46% | 0.50% |  |
| D | 9161 | 8469 | 880 | 880 | 9.61% | 10.39% |  |
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 | 211850 | 971.83 | 885 | 858 | 217.1 |
| A | 3 | 78 | 118367 | 541.25 | 885 | 858 | 217.1 |
| A | 3 | 128 | 36188 | 162.73 | 885 | 858 | 217.1 |
| B | 0 | 199 | 248169 | 1303.15 | 878 | 842 | 189.8 |
| B | 5 | 185 | 174258 | 913.72 | 878 | 842 | 189.8 |
| B | 0 | 182 | 33791 | 173.61 | 878 | 842 | 189.8 |
| C | 12 | 252 | 118548 | 495.65 | 873 | 864 | 237.4 |
| C | 9 | 38 | 118356 | 494.84 | 873 | 864 | 237.4 |
| C | 13 | 3 | 116306 | 486.21 | 873 | 864 | 237.4 |
| D | 11 | 129 | 3321476 | 14526.69 | 811 | 777 | 228.6 |
| D | 3 | 12 | 397687 | 1736.32 | 811 | 777 | 228.6 |
| D | 11 | 176 | 330258 | 1441.34 | 811 | 777 | 228.6 |
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 |  |