Observation information
- date-obs: 2025-07-15
- time-obs: 15:13:17.655400000
- date-end: 2025-07-15
- time-end: 17:20:57.636400000
- obs_id: A13_003T01_9000006486
- exposure: 2637.00347394
- 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_52996cztM0_level2.fits
| modeM0/AS1A13_003T01_9000006486_52996cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,076,244,480 | 86,132,160 |
| Size | 1.0 GB
| 82.1 MB
|
| Events in quadrant A | 16,020,632 | 256,720 |
| Events in quadrant B | 4,292,892 | 777,086 |
| Events in quadrant C | 7,584,875 | 578,212 |
| Events in quadrant D | 11,348,835 | 462,355 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 52875 | 2 |
| B | 0 | 18035 | 0 |
| C | 0 | 27921 | 0 |
| D | 0 | 38999 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7659 | 5345 | 69.787178% |
| B | 7660 | 186 | 2.428198% |
| C | 7660 | 1309 | 17.088773% |
| D | 7660 | 2676 | 34.934726% |
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 | 7659 | 7659 | 4606 | 4606 | 60.14% | 60.14% |  |
| B | 7660 | 7660 | 93 | 93 | 1.21% | 1.21% |  |
| C | 7660 | 7660 | 1121 | 1121 | 14.63% | 14.63% |  |
| D | 7660 | 7660 | 2079 | 2079 | 27.14% | 27.14% |  |
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 | 10417421 | 82168.57 | 505 | 493 | 126.8 |
| A | 15 | 190 | 1642454 | 12951.76 | 505 | 493 | 126.8 |
| A | 7 | 206 | 1168323 | 9211.82 | 505 | 493 | 126.8 |
| B | 10 | 63 | 380771 | 2156.78 | 815 | 785 | 176.2 |
| B | 10 | 254 | 252121 | 1426.57 | 815 | 785 | 176.2 |
| B | 10 | 247 | 104002 | 585.85 | 815 | 785 | 176.2 |
| C | 12 | 254 | 2436674 | 12153.76 | 737 | 729 | 200.4 |
| C | 15 | 148 | 823722 | 4106.19 | 737 | 729 | 200.4 |
| C | 15 | 149 | 285878 | 1422.71 | 737 | 729 | 200.4 |
| D | 2 | 62 | 7073479 | 35730.72 | 689 | 658 | 197.9 |
| D | 8 | 176 | 171240 | 861.75 | 689 | 658 | 197.9 |
| D | 11 | 176 | 148121 | 744.96 | 689 | 658 | 197.9 |
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 |  |