Observation information
- date-obs: 2025-12-13
- time-obs: 16:57:58.977200000
- date-end: 2025-12-13
- time-end: 18:25:54.966700000
- obs_id: A14_009T01_9000006534
- exposure: 4309.63403946
- 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_55241cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55241cztM0_level2_quad_clean.evt
|
| Size (bytes) | 465,033,600 | 68,722,560 |
| Size | 443.5 MB
| 65.5 MB
|
| Events in quadrant A | 4,245,872 | 438,533 |
| Events in quadrant B | 3,704,553 | 468,875 |
| Events in quadrant C | 5,566,455 | 396,962 |
| Events in quadrant D | 3,302,662 | 421,257 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 100 | 0 |
| B | 0 | 100 | 0 |
| C | 0 | 100 | 0 |
| D | 0 | 100 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16306 | 1 |
| B | 0 | 14882 | 1 |
| C | 0 | 20146 | 1 |
| D | 0 | 13575 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 2 | 0 |
| B | 0 | 2 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5071 | 618 | 12.186945% |
| B | 5071 | 584 | 11.516466% |
| C | 5071 | 912 | 17.984618% |
| D | 5071 | 218 | 4.298955% |
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 | 5071 | 5071 | 540 | 540 | 10.65% | 10.65% |  |
| B | 5071 | 5071 | 454 | 454 | 8.95% | 8.95% |  |
| C | 5071 | 5071 | 912 | 912 | 17.98% | 17.98% |  |
| D | 5071 | 5071 | 214 | 214 | 4.22% | 4.22% |  |
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 | 3 | 1944490 | 15727.98 | 493 | 481 | 123.6 |
| A | 12 | 194 | 239257 | 1931.81 | 493 | 481 | 123.6 |
| A | 5 | 242 | 39898 | 318.9 | 493 | 481 | 123.6 |
| B | 5 | 185 | 1629327 | 15335.26 | 495 | 478 | 106.2 |
| B | 2 | 249 | 35059 | 325.57 | 495 | 478 | 106.2 |
| B | 10 | 247 | 30321 | 280.97 | 495 | 478 | 106.2 |
| C | 12 | 254 | 1578067 | 12213.49 | 466 | 461 | 129.2 |
| C | 12 | 249 | 795875 | 6157.92 | 466 | 461 | 129.2 |
| C | 1 | 16 | 433028 | 3348.84 | 466 | 461 | 129.2 |
| D | 8 | 160 | 888274 | 6327.78 | 495 | 474 | 140.3 |
| D | 6 | 46 | 186612 | 1326.7 | 495 | 474 | 140.3 |
| D | 11 | 129 | 96594 | 685.09 | 495 | 474 | 140.3 |
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 |  |