Observation information
- date-obs: 2025-12-15
- time-obs: 17:27:58.604900000
- date-end: 2025-12-15
- time-end: 19:40:14.580200000
- obs_id: A14_009T01_9000006534
- exposure: 6114.49146736
- 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_55271cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55271cztM0_level2_quad_clean.evt
|
| Size (bytes) | 386,164,800 | 95,664,960 |
| Size | 368.3 MB
| 91.2 MB
|
| Events in quadrant A | 3,092,959 | 625,259 |
| Events in quadrant B | 3,175,963 | 672,841 |
| Events in quadrant C | 3,905,519 | 592,356 |
| Events in quadrant D | 3,626,048 | 563,234 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13722 | 2 |
| B | 0 | 14054 | 2 |
| C | 0 | 16147 | 2 |
| D | 0 | 15306 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6348 | 47 | 0.740391% |
| B | 6348 | 67 | 1.055451% |
| C | 6348 | 224 | 3.528670% |
| D | 6347 | 140 | 2.205767% |
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 | 7488 | 6349 | 3 | 3 | 0.04% | 0.05% |  |
| B | 7488 | 6349 | 14 | 14 | 0.19% | 0.22% |  |
| C | 7488 | 6349 | 189 | 189 | 2.52% | 2.98% |  |
| D | 7487 | 6348 | 94 | 94 | 1.26% | 1.48% |  |
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 | 3 | 14 | 242040 | 1442.57 | 680 | 664 | 167.3 |
| A | 12 | 115 | 108766 | 646.07 | 680 | 664 | 167.3 |
| A | 7 | 243 | 27374 | 159.63 | 680 | 664 | 167.3 |
| B | 7 | 0 | 185543 | 1290.37 | 675 | 651 | 143.3 |
| B | 5 | 185 | 97477 | 675.75 | 675 | 651 | 143.3 |
| B | 4 | 81 | 69797 | 482.57 | 675 | 651 | 143.3 |
| C | 15 | 147 | 496222 | 2714.2 | 664 | 657 | 182.6 |
| C | 13 | 3 | 441938 | 2416.89 | 664 | 657 | 182.6 |
| C | 10 | 22 | 86336 | 469.26 | 664 | 657 | 182.6 |
| D | 11 | 129 | 632723 | 3381.66 | 664 | 634 | 186.9 |
| D | 6 | 239 | 198278 | 1057.39 | 664 | 634 | 186.9 |
| D | 7 | 96 | 51718 | 273.3 | 664 | 634 | 186.9 |
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 |  |