Observation information
- date-obs: 2025-07-25
- time-obs: 04:20:55.816500000
- date-end: 2025-07-25
- time-end: 06:20:31.800800000
- obs_id: C09_011T07_9000006488
- exposure: 22.4119477868
- 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_53138cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53138cztM0_level2_quad_clean.evt
|
| Size (bytes) | 788,892,480 | 68,408,640 |
| Size | 752.3 MB
| 65.2 MB
|
| Events in quadrant A | 15,476,990 | 2,032 |
| Events in quadrant B | 3,441,269 | 615,368 |
| Events in quadrant C | 5,684,787 | 506,680 |
| Events in quadrant D | 4,119,442 | 515,705 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 50121 | 59 |
| B | 0 | 14773 | 5 |
| C | 0 | 21157 | 7 |
| D | 0 | 16616 | 13 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6173 | 6157 | 99.740807% |
| B | 6179 | 219 | 3.544263% |
| C | 6179 | 637 | 10.309112% |
| D | 6177 | 233 | 3.772058% |
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 | 7176 | 6181 | 5544 | 5544 | 77.26% | 89.69% |  |
| B | 7177 | 6182 | 104 | 104 | 1.45% | 1.68% |  |
| C | 7177 | 6183 | 606 | 606 | 8.44% | 9.80% |  |
| D | 7177 | 6181 | 245 | 245 | 3.41% | 3.96% |  |
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 | 14474451 | 306614.88 | 180 | 175 | 47.2 |
| A | 0 | 8 | 144987 | 3067.62 | 180 | 175 | 47.2 |
| A | 15 | 174 | 64093 | 1354.0 | 180 | 175 | 47.2 |
| B | 2 | 249 | 429130 | 3237.77 | 621 | 600 | 132.4 |
| B | 10 | 254 | 134620 | 1012.59 | 621 | 600 | 132.4 |
| B | 0 | 213 | 130417 | 980.84 | 621 | 600 | 132.4 |
| C | 0 | 240 | 1605525 | 9907.83 | 585 | 581 | 162.0 |
| C | 15 | 224 | 645956 | 3984.11 | 585 | 581 | 162.0 |
| C | 7 | 80 | 455818 | 2810.32 | 585 | 581 | 162.0 |
| D | 8 | 176 | 559657 | 3270.86 | 598 | 572 | 170.9 |
| D | 3 | 224 | 273897 | 1599.06 | 598 | 572 | 170.9 |
| D | 6 | 42 | 151104 | 880.67 | 598 | 572 | 170.9 |
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 |  |