Observation information
- date-obs: 2025-05-17
- time-obs: 13:39:22.618700000
- date-end: 2025-05-17
- time-end: 15:43:11.601500000
- obs_id: C09_011T07_9000006470
- exposure: 10.4053539038
- 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_52119cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52119cztM0_level2_quad_clean.evt
|
| Size (bytes) | 891,933,120 | 71,665,920 |
| Size | 850.6 MB
| 68.3 MB
|
| Events in quadrant A | 3,843,019 | 611,138 |
| Events in quadrant B | 4,715,518 | 632,752 |
| Events in quadrant C | 7,846,134 | 486,255 |
| Events in quadrant D | 16,125,418 | 1,127 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 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 | 15589 | 1 |
| B | 0 | 18258 | 1 |
| C | 0 | 27654 | 1 |
| D | 0 | 52200 | 7 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6279 | 207 | 3.296703% |
| B | 6280 | 396 | 6.305732% |
| C | 6280 | 1567 | 24.952229% |
| D | 6279 | 6271 | 99.872591% |
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 | 7429 | 6280 | 115 | 115 | 1.55% | 1.83% |  |
| B | 7430 | 6281 | 243 | 243 | 3.27% | 3.87% |  |
| C | 7430 | 6281 | 1165 | 1165 | 15.68% | 18.55% |  |
| D | 7428 | 6278 | 6122 | 6122 | 82.42% | 97.52% |  |
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 | 7 | 453046 | 2687.9 | 673 | 656 | 168.3 |
| A | 4 | 3 | 218637 | 1295.15 | 673 | 656 | 168.3 |
| A | 4 | 249 | 177504 | 1050.75 | 673 | 656 | 168.3 |
| B | 5 | 172 | 814047 | 5858.05 | 656 | 633 | 138.9 |
| B | 4 | 171 | 568271 | 4088.02 | 656 | 633 | 138.9 |
| B | 4 | 81 | 144724 | 1037.72 | 656 | 633 | 138.9 |
| C | 15 | 224 | 4276673 | 25865.49 | 598 | 594 | 165.3 |
| C | 13 | 3 | 579899 | 3504.15 | 598 | 594 | 165.3 |
| C | 0 | 161 | 121320 | 730.26 | 598 | 594 | 165.3 |
| D | 15 | 94 | 9568737 | 332193.37 | 94 | 89 | 28.8 |
| D | 6 | 42 | 5683778 | 197319.81 | 94 | 89 | 28.8 |
| D | 0 | 18 | 200281 | 6950.04 | 94 | 89 | 28.8 |
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 |  |