Observation information
- date-obs: 2025-12-21
- time-obs: 20:38:03.451800000
- date-end: 2025-12-21
- time-end: 23:06:10.425700000
- obs_id: A14_009T01_9000006534
- exposure: 7273.33093244
- 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_55362cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55362cztM0_level2_quad_clean.evt
|
| Size (bytes) | 480,781,440 | 109,598,400 |
| Size | 458.5 MB
| 104.5 MB
|
| Events in quadrant A | 4,159,589 | 716,900 |
| Events in quadrant B | 3,864,006 | 756,542 |
| Events in quadrant C | 4,041,094 | 685,085 |
| Events in quadrant D | 5,141,830 | 631,886 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17904 | 2 |
| B | 0 | 17213 | 2 |
| C | 0 | 17762 | 2 |
| D | 0 | 20803 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7597 | 81 | 1.066210% |
| B | 7598 | 194 | 2.553304% |
| C | 7598 | 99 | 1.302974% |
| D | 7598 | 329 | 4.330087% |
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 | 8887 | 7599 | 39 | 39 | 0.44% | 0.51% |  |
| B | 8888 | 7600 | 84 | 84 | 0.95% | 1.11% |  |
| C | 8888 | 7600 | 62 | 62 | 0.70% | 0.82% |  |
| D | 8888 | 7600 | 248 | 248 | 2.79% | 3.26% |  |
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 | 683764 | 3402.07 | 814 | 793 | 200.8 |
| A | 0 | 8 | 162647 | 806.24 | 814 | 793 | 200.8 |
| A | 4 | 3 | 44608 | 218.25 | 814 | 793 | 200.8 |
| B | 5 | 185 | 389674 | 2252.04 | 806 | 775 | 172.7 |
| B | 0 | 199 | 166242 | 958.19 | 806 | 775 | 172.7 |
| B | 9 | 254 | 52195 | 297.76 | 806 | 775 | 172.7 |
| C | 12 | 250 | 162564 | 741.08 | 801 | 792 | 218.3 |
| C | 7 | 64 | 153632 | 700.16 | 801 | 792 | 218.3 |
| C | 13 | 3 | 142226 | 647.91 | 801 | 792 | 218.3 |
| D | 11 | 129 | 685622 | 3024.75 | 789 | 752 | 226.4 |
| D | 2 | 31 | 305192 | 1344.57 | 789 | 752 | 226.4 |
| D | 5 | 38 | 213286 | 938.66 | 789 | 752 | 226.4 |
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 |  |