Observation information
- date-obs: 2025-07-31
- time-obs: 16:30:10.581100000
- date-end: 2025-07-31
- time-end: 18:31:28.564500000
- obs_id: C09_011T06_9000006490
- exposure: 2181.87898517
- sourceid: NGC 188
- observer: stalin
- ra_pnt: 12.08
- dec_pnt: 85.15722
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1C09_011T06_9000006490_53235cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53235cztM0_level2_quad_clean.evt
|
| Size (bytes) | 841,582,080 | 73,759,680 |
| Size | 802.6 MB
| 70.3 MB
|
| Events in quadrant A | 5,042,035 | 564,920 |
| Events in quadrant B | 12,405,269 | 228,470 |
| Events in quadrant C | 7,422,122 | 483,579 |
| Events in quadrant D | 5,799,098 | 519,406 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19315 | 1 |
| B | 0 | 41115 | 2 |
| C | 0 | 26482 | 1 |
| D | 0 | 21607 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6258 | 622 | 9.939278% |
| B | 6258 | 4268 | 68.200703% |
| C | 6258 | 1252 | 20.006392% |
| D | 6258 | 549 | 8.772771% |
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 | 7278 | 6259 | 526 | 526 | 7.23% | 8.40% |  |
| B | 7278 | 6259 | 3768 | 3768 | 51.77% | 60.20% |  |
| C | 7278 | 6259 | 1073 | 1073 | 14.74% | 17.14% |  |
| D | 7278 | 6259 | 359 | 359 | 4.93% | 5.74% |  |
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 | 3 | 62 | 1338022 | 8364.8 | 636 | 621 | 159.9 |
| A | 7 | 206 | 372795 | 2327.77 | 636 | 621 | 159.9 |
| A | 14 | 254 | 267523 | 1669.34 | 636 | 621 | 159.9 |
| B | 12 | 33 | 8587950 | 83439.55 | 479 | 462 | 102.9 |
| B | 2 | 249 | 860333 | 8354.85 | 479 | 462 | 102.9 |
| B | 10 | 254 | 520373 | 5051.66 | 479 | 462 | 102.9 |
| C | 1 | 241 | 1785528 | 10900.17 | 596 | 591 | 163.8 |
| C | 15 | 224 | 1634025 | 9974.97 | 596 | 591 | 163.8 |
| C | 9 | 38 | 940049 | 5737.04 | 596 | 591 | 163.8 |
| D | 15 | 125 | 1149384 | 6434.41 | 627 | 598 | 178.5 |
| D | 10 | 172 | 940906 | 5266.71 | 627 | 598 | 178.5 |
| D | 6 | 239 | 260075 | 1453.34 | 627 | 598 | 178.5 |
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 |  |