Observation information
- date-obs: 2025-05-18
- time-obs: 19:03:14.376300000
- date-end: 2025-05-18
- time-end: 21:09:47.359300000
- obs_id: C09_011T07_9000006470
- exposure: 15.3929061294
- 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_9000006470_52137cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52137cztM0_level2_quad_clean.evt
|
| Size (bytes) | 999,547,200 | 74,456,640 |
| Size | 953.2 MB
| 71.0 MB
|
| Events in quadrant A | 3,837,981 | 665,217 |
| Events in quadrant B | 5,347,287 | 672,921 |
| Events in quadrant C | 10,031,163 | 429,148 |
| Events in quadrant D | 17,243,681 | 1,243 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16272 | 1 |
| B | 0 | 20721 | 4 |
| C | 0 | 34702 | 12 |
| D | 0 | 55991 | 24 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6969 | 138 | 1.980198% |
| B | 6967 | 563 | 8.080953% |
| C | 6965 | 2658 | 38.162240% |
| D | 6966 | 6957 | 99.870801% |
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 | 7594 | 6970 | 100 | 100 | 1.32% | 1.43% |  |
| B | 7594 | 6969 | 388 | 388 | 5.11% | 5.57% |  |
| C | 7594 | 6968 | 2199 | 2199 | 28.96% | 31.56% |  |
| D | 7592 | 6965 | 6582 | 6582 | 86.70% | 94.50% |  |
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 | 295728 | 1616.54 | 727 | 709 | 182.5 |
| A | 14 | 254 | 139481 | 760.39 | 727 | 709 | 182.5 |
| A | 3 | 114 | 136708 | 745.2 | 727 | 709 | 182.5 |
| B | 5 | 172 | 962357 | 6427.6 | 706 | 681 | 149.6 |
| B | 5 | 185 | 347529 | 2318.25 | 706 | 681 | 149.6 |
| B | 0 | 216 | 275451 | 1836.49 | 706 | 681 | 149.6 |
| C | 15 | 224 | 4213880 | 25752.75 | 583 | 579 | 163.6 |
| C | 15 | 193 | 2368992 | 14476.33 | 583 | 579 | 163.6 |
| C | 13 | 3 | 291743 | 1779.67 | 583 | 579 | 163.6 |
| D | 6 | 42 | 11268264 | 194330.43 | 200 | 190 | 58.0 |
| D | 15 | 94 | 4529267 | 78108.96 | 200 | 190 | 58.0 |
| D | 12 | 1 | 104676 | 1801.98 | 200 | 190 | 58.0 |
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 |  |