Observation information
- date-obs: 2025-12-16
- time-obs: 21:09:38.390700000
- date-end: 2025-12-16
- time-end: 23:27:13.364600000
- obs_id: A14_009T01_9000006534
- exposure: 6430.43988258
- 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_55288cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55288cztM0_level2_quad_clean.evt
|
| Size (bytes) | 377,786,880 | 97,110,720 |
| Size | 360.3 MB
| 92.6 MB
|
| Events in quadrant A | 2,925,988 | 632,586 |
| Events in quadrant B | 3,228,182 | 671,123 |
| Events in quadrant C | 3,020,230 | 611,326 |
| Events in quadrant D | 4,287,770 | 558,119 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13953 | 2 |
| B | 0 | 14732 | 6 |
| C | 0 | 14191 | 6 |
| D | 0 | 17684 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6706 | 28 | 0.417537% |
| B | 6703 | 121 | 1.805162% |
| C | 6704 | 33 | 0.492243% |
| D | 6706 | 267 | 3.981509% |
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 | 7666 | 6708 | 7 | 7 | 0.09% | 0.10% |  |
| B | 7666 | 6707 | 53 | 53 | 0.69% | 0.79% |  |
| C | 7666 | 6707 | 16 | 16 | 0.21% | 0.24% |  |
| D | 7666 | 6708 | 237 | 237 | 3.09% | 3.53% |  |
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 | 84291 | 485.99 | 694 | 678 | 172.0 |
| A | 4 | 205 | 40257 | 230.05 | 694 | 678 | 172.0 |
| A | 4 | 3 | 29400 | 166.94 | 694 | 678 | 172.0 |
| B | 10 | 247 | 130911 | 882.28 | 689 | 664 | 147.6 |
| B | 0 | 199 | 93881 | 631.44 | 689 | 664 | 147.6 |
| B | 7 | 252 | 81327 | 546.4 | 689 | 664 | 147.6 |
| C | 13 | 3 | 124982 | 654.05 | 687 | 680 | 190.1 |
| C | 12 | 250 | 78486 | 409.4 | 687 | 680 | 190.1 |
| C | 3 | 208 | 56815 | 295.37 | 687 | 680 | 190.1 |
| D | 11 | 129 | 886188 | 4653.95 | 670 | 641 | 190.3 |
| D | 7 | 70 | 319892 | 1677.81 | 670 | 641 | 190.3 |
| D | 8 | 245 | 73035 | 380.46 | 670 | 641 | 190.3 |
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 |  |