Observation information
- date-obs: 2025-07-13
- time-obs: 06:02:04.194900000
- date-end: 2025-07-13
- time-end: 08:09:08.174300000
- obs_id: A13_003T01_9000006486
- exposure: 3796.45552993
- sourceid: M31N2008-12a
- observer: Judhajeet
- ra_pnt: 11.37
- dec_pnt: 41.90281
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_003T01_9000006486_52961cztM0_level2.fits
| modeM0/AS1A13_003T01_9000006486_52961cztM0_level2_quad_clean.evt
|
| Size (bytes) | 790,632,000 | 83,704,320 |
| Size | 754.0 MB
| 79.8 MB
|
| Events in quadrant A | 10,298,564 | 386,302 |
| Events in quadrant B | 4,354,495 | 668,858 |
| Events in quadrant C | 4,518,561 | 580,483 |
| Events in quadrant D | 9,593,658 | 446,996 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 35009 | 1 |
| B | 0 | 17372 | 1 |
| C | 0 | 18138 | 1 |
| D | 0 | 33058 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6479 | 2871 | 44.312394% |
| B | 6479 | 368 | 5.679889% |
| C | 6480 | 395 | 6.095679% |
| D | 6480 | 1548 | 23.888889% |
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 | 7624 | 6479 | 2669 | 2669 | 35.01% | 41.19% |  |
| B | 7624 | 6480 | 267 | 267 | 3.50% | 4.12% |  |
| C | 7625 | 6481 | 341 | 341 | 4.47% | 5.26% |  |
| D | 7625 | 6481 | 1433 | 1433 | 18.79% | 22.11% |  |
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 | 9 | 191 | 7201833 | 53897.0 | 535 | 523 | 133.6 |
| A | 4 | 249 | 607263 | 4541.04 | 535 | 523 | 133.6 |
| A | 0 | 8 | 202695 | 1513.12 | 535 | 523 | 133.6 |
| B | 10 | 63 | 858998 | 5934.62 | 675 | 653 | 144.6 |
| B | 10 | 254 | 414899 | 2864.11 | 675 | 653 | 144.6 |
| B | 5 | 185 | 139251 | 958.27 | 675 | 653 | 144.6 |
| C | 15 | 147 | 594153 | 3352.5 | 649 | 645 | 177.0 |
| C | 13 | 3 | 551673 | 3112.54 | 649 | 645 | 177.0 |
| C | 7 | 80 | 355795 | 2006.1 | 649 | 645 | 177.0 |
| D | 8 | 176 | 3327574 | 19610.0 | 589 | 561 | 169.7 |
| D | 2 | 62 | 2036424 | 11999.74 | 589 | 561 | 169.7 |
| D | 15 | 78 | 1380985 | 8136.46 | 589 | 561 | 169.7 |
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 |  |