Observation information
- date-obs: 2025-12-22
- time-obs: 12:42:21.324000000
- date-end: 2025-12-22
- time-end: 14:49:16.307500000
- obs_id: A14_009T01_9000006534
- exposure: 5526.0473479
- 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_55372cztM0_level2.fits
| modeM0/AS1A14_009T01_9000006534_55372cztM0_level2_quad_clean.evt
|
| Size (bytes) | 535,688,640 | 93,997,440 |
| Size | 510.9 MB
| 89.6 MB
|
| Events in quadrant A | 7,592,514 | 553,596 |
| Events in quadrant B | 3,286,595 | 683,622 |
| Events in quadrant C | 4,330,497 | 599,954 |
| Events in quadrant D | 4,116,625 | 556,494 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 27013 | 1 |
| B | 0 | 14447 | 1 |
| C | 0 | 17485 | 1 |
| D | 0 | 16814 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6485 | 1127 | 17.378566% |
| B | 6485 | 96 | 1.480339% |
| C | 6485 | 232 | 3.577487% |
| D | 6485 | 390 | 6.013878% |
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 | 7615 | 6485 | 876 | 876 | 11.50% | 13.51% |  |
| B | 7615 | 6486 | 21 | 21 | 0.28% | 0.32% |  |
| C | 7615 | 6486 | 177 | 177 | 2.32% | 2.73% |  |
| D | 7615 | 6486 | 343 | 343 | 4.50% | 5.29% |  |
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 | 4 | 159 | 3365941 | 20455.3 | 666 | 651 | 164.5 |
| A | 12 | 115 | 1236808 | 7513.75 | 666 | 651 | 164.5 |
| A | 0 | 8 | 113740 | 687.39 | 666 | 651 | 164.5 |
| B | 0 | 199 | 248563 | 1682.22 | 688 | 663 | 147.4 |
| B | 5 | 185 | 167353 | 1131.14 | 688 | 663 | 147.4 |
| B | 4 | 81 | 59057 | 396.25 | 688 | 663 | 147.4 |
| C | 9 | 38 | 951195 | 5159.17 | 671 | 666 | 184.2 |
| C | 13 | 3 | 607073 | 3291.39 | 671 | 666 | 184.2 |
| C | 12 | 250 | 106706 | 575.55 | 671 | 666 | 184.2 |
| D | 11 | 176 | 861690 | 4551.17 | 672 | 644 | 189.2 |
| D | 2 | 249 | 121425 | 638.4 | 672 | 644 | 189.2 |
| D | 10 | 181 | 112668 | 592.12 | 672 | 644 | 189.2 |
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 |  |