Observation information
- date-obs: 2025-07-11
- time-obs: 19:16:28.513500000
- date-end: 2025-07-11
- time-end: 23:19:16.479500000
- obs_id: A13_003T01_9000006486
- exposure: 251.925153375
- 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_52941cztM0_level2.fits
| modeM0/AS1A13_003T01_9000006486_52941cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,944,403,200 | 156,772,800 |
| Size | 1.8 GB
| 149.5 MB
|
| Events in quadrant A | 35,672,193 | 22,713 |
| Events in quadrant B | 10,868,953 | 1,409,713 |
| Events in quadrant C | 9,807,111 | 1,228,993 |
| Events in quadrant D | 14,536,844 | 1,108,570 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 115561 | 6 |
| B | 0 | 42607 | 2 |
| C | 0 | 39089 | 2 |
| D | 0 | 53136 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 286 | 0 |
| B | 0 | 286 | 0 |
| C | 0 | 286 | 0 |
| D | 0 | 286 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 14132 | 13953 | 98.733371% |
| B | 14133 | 702 | 4.967098% |
| C | 14133 | 731 | 5.172292% |
| D | 14133 | 1839 | 13.012099% |
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 | 14567 | 14132 | 13137 | 13137 | 90.18% | 92.96% |  |
| B | 14568 | 14135 | 192 | 192 | 1.32% | 1.36% |  |
| C | 14568 | 14134 | 496 | 496 | 3.40% | 3.51% |  |
| D | 14568 | 14135 | 1421 | 1421 | 9.75% | 10.05% |  |
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 | 31672705 | 232677.01 | 529 | 514 | 136.1 |
| A | 12 | 80 | 748888 | 5497.86 | 529 | 514 | 136.1 |
| A | 4 | 238 | 394091 | 2891.38 | 529 | 514 | 136.1 |
| B | 5 | 172 | 3200823 | 9920.64 | 1497 | 1444 | 322.5 |
| B | 10 | 128 | 659004 | 2038.96 | 1497 | 1444 | 322.5 |
| B | 10 | 254 | 278291 | 858.45 | 1497 | 1444 | 322.5 |
| C | 13 | 3 | 589470 | 1458.4 | 1459 | 1440 | 403.2 |
| C | 9 | 38 | 493398 | 1220.12 | 1459 | 1440 | 403.2 |
| C | 15 | 178 | 464670 | 1148.88 | 1459 | 1440 | 403.2 |
| D | 8 | 176 | 3117873 | 7617.85 | 1421 | 1362 | 409.1 |
| D | 15 | 78 | 2259812 | 5520.44 | 1421 | 1362 | 409.1 |
| D | 10 | 172 | 818434 | 1997.21 | 1421 | 1362 | 409.1 |
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 |  |