Observation information
- date-obs: 2025-08-04
- time-obs: 15:50:06.828800000
- date-end: 2025-08-04
- time-end: 17:55:45.811800000
- obs_id: C09_011T08_9000006492
- exposure: 4983.05214703
- 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_011T08_9000006492_53294cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53294cztM0_level2_quad_clean.evt
|
| Size (bytes) | 619,202,880 | 91,261,440 |
| Size | 590.5 MB
| 87.0 MB
|
| Events in quadrant A | 4,372,952 | 625,496 |
| Events in quadrant B | 4,881,158 | 653,457 |
| Events in quadrant C | 8,786,186 | 470,449 |
| Events in quadrant D | 4,382,021 | 565,001 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17393 | 2 |
| B | 0 | 18861 | 6 |
| C | 0 | 30563 | 20 |
| D | 0 | 17562 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 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 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6435 | 322 | 5.003885% |
| B | 6434 | 514 | 7.988809% |
| C | 6430 | 1718 | 26.718507% |
| D | 6434 | 274 | 4.258626% |
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 | 7520 | 6436 | 259 | 259 | 3.44% | 4.02% |  |
| B | 7519 | 6435 | 302 | 302 | 4.02% | 4.69% |  |
| C | 7519 | 6434 | 1564 | 1564 | 20.80% | 24.31% |  |
| D | 7519 | 6435 | 201 | 201 | 2.67% | 3.12% |  |
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 | 1265841 | 7345.62 | 690 | 672 | 172.2 |
| A | 7 | 206 | 160173 | 926.07 | 690 | 672 | 172.2 |
| A | 5 | 240 | 64366 | 369.81 | 690 | 672 | 172.2 |
| B | 2 | 249 | 923749 | 6410.12 | 673 | 650 | 144.0 |
| B | 10 | 254 | 398033 | 2759.48 | 673 | 650 | 144.0 |
| B | 4 | 81 | 386034 | 2676.16 | 673 | 650 | 144.0 |
| C | 15 | 178 | 1769323 | 10542.35 | 609 | 601 | 167.8 |
| C | 4 | 5 | 1432728 | 8536.09 | 609 | 601 | 167.8 |
| C | 15 | 224 | 1178637 | 7021.6 | 609 | 601 | 167.8 |
| D | 3 | 12 | 627381 | 3315.14 | 674 | 644 | 189.1 |
| D | 11 | 176 | 517716 | 2735.07 | 674 | 644 | 189.1 |
| D | 2 | 62 | 111836 | 588.15 | 674 | 644 | 189.1 |
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 |  |