Observation information
- date-obs: 2025-07-08
- time-obs: 14:55:55.127000000
- date-end: 2025-07-08
- time-end: 17:00:17.111900000
- obs_id: C09_011T08_9000006482
- exposure: 4718.65338141
- 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_9000006482_52892cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006482_52892cztM0_level2_quad_clean.evt
|
| Size (bytes) | 662,071,680 | 92,655,360 |
| Size | 631.4 MB
| 88.4 MB
|
| Events in quadrant A | 4,190,202 | 677,655 |
| Events in quadrant B | 6,332,614 | 593,078 |
| Events in quadrant C | 4,261,440 | 627,879 |
| Events in quadrant D | 9,204,744 | 440,095 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17078 | 1 |
| B | 0 | 23365 | 1 |
| C | 0 | 17323 | 1 |
| D | 0 | 31989 | 5 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7 | 0 |
| B | 0 | 7 | 0 |
| C | 0 | 7 | 0 |
| D | 0 | 7 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6687 | 185 | 2.766562% |
| B | 6688 | 1149 | 17.180024% |
| C | 6688 | 177 | 2.646531% |
| D | 6687 | 2165 | 32.376252% |
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 | 7462 | 6688 | 120 | 120 | 1.61% | 1.79% |  |
| B | 7463 | 6688 | 1006 | 1006 | 13.48% | 15.04% |  |
| C | 7463 | 6689 | 122 | 122 | 1.63% | 1.82% |  |
| D | 7461 | 6687 | 2051 | 2051 | 27.49% | 30.67% |  |
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 | 12 | 17 | 419823 | 2329.82 | 717 | 700 | 179.9 |
| A | 12 | 80 | 318345 | 1765.73 | 717 | 700 | 179.9 |
| A | 15 | 174 | 93430 | 515.47 | 717 | 700 | 179.9 |
| B | 10 | 254 | 2769857 | 19408.71 | 669 | 646 | 142.7 |
| B | 1 | 223 | 199228 | 1391.81 | 669 | 646 | 142.7 |
| B | 0 | 213 | 111691 | 778.29 | 669 | 646 | 142.7 |
| C | 3 | 233 | 354591 | 1845.68 | 689 | 678 | 191.8 |
| C | 7 | 80 | 278184 | 1447.21 | 689 | 678 | 191.8 |
| C | 15 | 224 | 220980 | 1148.89 | 689 | 678 | 191.8 |
| D | 15 | 125 | 2863921 | 16612.86 | 598 | 571 | 172.4 |
| D | 8 | 176 | 1863342 | 10807.6 | 598 | 571 | 172.4 |
| D | 9 | 49 | 861853 | 4997.07 | 598 | 571 | 172.4 |
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 |  |