Observation information
- date-obs: 2025-07-19
- time-obs: 04:23:02.935700000
- date-end: 2025-07-19
- time-end: 06:20:42.920300000
- obs_id: C09_011T07_9000006488
- exposure: 5151.93087655
- 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_011T07_9000006488_53049cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53049cztM0_level2_quad_clean.evt
|
| Size (bytes) | 545,005,440 | 81,544,320 |
| Size | 519.8 MB
| 77.8 MB
|
| Events in quadrant A | 5,855,490 | 518,186 |
| Events in quadrant B | 3,074,536 | 592,869 |
| Events in quadrant C | 5,618,619 | 476,850 |
| Events in quadrant D | 5,176,691 | 475,559 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 121 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 121 | 0 |
| D | 0 | 122 | 0 |
| 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 | 21697 | 206 |
| B | 0 | 13517 | 183 |
| C | 0 | 21337 | 578 |
| D | 0 | 20102 | 599 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5822 | 674 | 11.576778% |
| B | 5809 | 152 | 2.616629% |
| C | 5765 | 741 | 12.853426% |
| D | 5759 | 426 | 7.397118% |
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 | 7059 | 5880 | 513 | 513 | 7.27% | 8.72% |  |
| B | 7059 | 5873 | 79 | 79 | 1.12% | 1.35% |  |
| C | 7059 | 5858 | 683 | 683 | 9.68% | 11.66% |  |
| D | 7060 | 5860 | 428 | 428 | 6.06% | 7.30% |  |
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 | 2415705 | 16583.7 | 583 | 567 | 145.6 |
| A | 7 | 206 | 794295 | 5450.18 | 583 | 567 | 145.6 |
| A | 0 | 8 | 208928 | 1430.72 | 583 | 567 | 145.6 |
| B | 1 | 255 | 366353 | 2901.83 | 589 | 568 | 126.1 |
| B | 0 | 213 | 111888 | 883.12 | 589 | 568 | 126.1 |
| B | 10 | 247 | 66085 | 519.76 | 589 | 568 | 126.1 |
| C | 15 | 224 | 1566726 | 10402.69 | 541 | 536 | 150.6 |
| C | 13 | 3 | 1141752 | 7579.99 | 541 | 536 | 150.6 |
| C | 15 | 244 | 215362 | 1426.88 | 541 | 536 | 150.6 |
| D | 12 | 17 | 881090 | 5560.0 | 555 | 529 | 158.4 |
| D | 8 | 176 | 802153 | 5061.58 | 555 | 529 | 158.4 |
| D | 15 | 78 | 672223 | 4241.18 | 555 | 529 | 158.4 |
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 |  |