Observation information
- date-obs: 2025-08-09
- time-obs: 20:43:25.782600000
- date-end: 2025-08-09
- time-end: 22:51:20.754800000
- obs_id: C09_011T09_9000006494
- exposure: 1590.77232486
- 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_011T09_9000006494_53371cztM0_level2.fits
| modeM0/AS1C09_011T09_9000006494_53371cztM0_level2_quad_clean.evt
|
| Size (bytes) | 844,675,200 | 83,937,600 |
| Size | 805.5 MB
| 80.0 MB
|
| Events in quadrant A | 3,709,230 | 650,569 |
| Events in quadrant B | 4,980,649 | 678,960 |
| Events in quadrant C | 15,710,142 | 154,666 |
| Events in quadrant D | 6,339,613 | 582,507 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16158 | 2 |
| B | 0 | 19644 | 2 |
| C | 0 | 51387 | 2 |
| D | 0 | 23517 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6810 | 257 | 3.773862% |
| B | 6810 | 448 | 6.578561% |
| C | 6810 | 5372 | 78.883994% |
| D | 6810 | 426 | 6.255507% |
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 | 7645 | 6811 | 145 | 145 | 1.90% | 2.13% |  |
| B | 7645 | 6811 | 171 | 171 | 2.24% | 2.51% |  |
| C | 7645 | 6811 | 4879 | 4879 | 63.82% | 71.63% |  |
| D | 7645 | 6811 | 410 | 410 | 5.36% | 6.02% |  |
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 | 15 | 174 | 602635 | 3450.42 | 703 | 684 | 174.5 |
| A | 5 | 241 | 74798 | 424.83 | 703 | 684 | 174.5 |
| A | 8 | 6 | 57044 | 323.06 | 703 | 684 | 174.5 |
| B | 10 | 254 | 486257 | 3297.17 | 695 | 670 | 147.3 |
| B | 4 | 206 | 395751 | 2682.63 | 695 | 670 | 147.3 |
| B | 4 | 171 | 333185 | 2257.8 | 695 | 670 | 147.3 |
| C | 15 | 178 | 10615079 | 104028.95 | 369 | 364 | 102.0 |
| C | 1 | 241 | 1920372 | 18816.94 | 369 | 364 | 102.0 |
| C | 15 | 224 | 698399 | 6841.05 | 369 | 364 | 102.0 |
| D | 0 | 18 | 1612316 | 8345.66 | 684 | 656 | 193.1 |
| D | 11 | 245 | 351493 | 1816.74 | 684 | 656 | 193.1 |
| D | 12 | 35 | 331571 | 1713.58 | 684 | 656 | 193.1 |
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 |  |