Observation information
- date-obs: 2025-07-29
- time-obs: 19:16:47.936800000
- date-end: 2025-07-29
- time-end: 21:23:57.919700000
- obs_id: C09_011T06_9000006490
- exposure: 3350.27376598
- 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_53207cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006490_53207cztM0_level2_quad_clean.evt
|
| Size (bytes) | 763,634,880 | 84,648,960 |
| Size | 728.3 MB
| 80.7 MB
|
| Events in quadrant A | 3,921,783 | 625,434 |
| Events in quadrant B | 3,218,342 | 683,405 |
| Events in quadrant C | 7,379,242 | 508,070 |
| Events in quadrant D | 13,250,857 | 297,918 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16351 | 3 |
| B | 0 | 14280 | 2 |
| C | 0 | 26382 | 2 |
| D | 0 | 43824 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6422 | 273 | 4.251012% |
| B | 6422 | 67 | 1.043289% |
| C | 6422 | 1334 | 20.772345% |
| D | 6422 | 3451 | 53.737154% |
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 | 7557 | 6423 | 217 | 217 | 2.87% | 3.38% |  |
| B | 7557 | 6423 | 20 | 20 | 0.26% | 0.31% |  |
| C | 7557 | 6423 | 1223 | 1223 | 16.18% | 19.04% |  |
| D | 7557 | 6423 | 3784 | 3784 | 50.07% | 58.91% |  |
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 | 0 | 8 | 584233 | 3446.35 | 669 | 651 | 169.3 |
| A | 15 | 174 | 288973 | 1702.69 | 669 | 651 | 169.3 |
| A | 3 | 62 | 134370 | 789.68 | 669 | 651 | 169.3 |
| B | 10 | 247 | 142064 | 986.99 | 679 | 656 | 143.3 |
| B | 4 | 81 | 116283 | 807.04 | 679 | 656 | 143.3 |
| B | 0 | 213 | 74839 | 517.78 | 679 | 656 | 143.3 |
| C | 15 | 165 | 2707352 | 16078.95 | 611 | 605 | 168.3 |
| C | 15 | 224 | 985107 | 5848.26 | 611 | 605 | 168.3 |
| C | 4 | 5 | 481191 | 2854.83 | 611 | 605 | 168.3 |
| D | 15 | 125 | 9541993 | 63407.66 | 508 | 482 | 150.5 |
| D | 2 | 62 | 420320 | 2790.01 | 508 | 482 | 150.5 |
| D | 3 | 12 | 366502 | 2432.37 | 508 | 482 | 150.5 |
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 |  |