Observation information
- date-obs: 2025-07-11
- time-obs: 10:40:25.580700000
- date-end: 2025-07-11
- time-end: 12:44:41.565000000
- obs_id: A13_003T01_9000006486
- exposure: 346.200223446
- 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_52934cztM0_level2.fits
| modeM0/AS1A13_003T01_9000006486_52934cztM0_level2_quad_clean.evt
|
| Size (bytes) | 856,359,360 | 71,899,200 |
| Size | 816.7 MB
| 68.6 MB
|
| Events in quadrant A | 15,647,003 | 34,292 |
| Events in quadrant B | 3,687,429 | 659,610 |
| Events in quadrant C | 4,199,379 | 562,833 |
| Events in quadrant D | 7,670,483 | 474,848 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 50895 | 1 |
| B | 0 | 15361 | 1 |
| C | 0 | 16978 | 1 |
| D | 0 | 27211 | 7 |
| 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 | 6386 | 6138 | 96.116505% |
| B | 6387 | 289 | 4.524816% |
| C | 6387 | 348 | 5.448567% |
| D | 6386 | 1190 | 18.634513% |
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 | 7455 | 6385 | 5268 | 5268 | 70.66% | 82.51% |  |
| B | 7457 | 6388 | 109 | 109 | 1.46% | 1.71% |  |
| C | 7457 | 6389 | 200 | 200 | 2.68% | 3.13% |  |
| D | 7456 | 6387 | 983 | 983 | 13.18% | 15.39% |  |
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 | 14019559 | 176898.51 | 313 | 305 | 79.3 |
| A | 13 | 248 | 100542 | 1264.82 | 313 | 305 | 79.3 |
| A | 4 | 254 | 93177 | 1171.88 | 313 | 305 | 79.3 |
| B | 1 | 255 | 523505 | 3510.03 | 694 | 671 | 149.0 |
| B | 4 | 81 | 67726 | 450.17 | 694 | 671 | 149.0 |
| B | 1 | 239 | 59334 | 393.83 | 694 | 671 | 149.0 |
| C | 9 | 38 | 615063 | 3353.2 | 667 | 658 | 183.2 |
| C | 15 | 224 | 244631 | 1331.52 | 667 | 658 | 183.2 |
| C | 7 | 80 | 209158 | 1137.92 | 667 | 658 | 183.2 |
| D | 8 | 176 | 2458605 | 13622.26 | 633 | 607 | 180.4 |
| D | 15 | 78 | 556533 | 3080.95 | 633 | 607 | 180.4 |
| D | 10 | 172 | 452776 | 2505.93 | 633 | 607 | 180.4 |
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 |  |