Observation information
- date-obs: 2025-05-20
- time-obs: 05:56:51.951800000
- date-end: 2025-05-20
- time-end: 07:53:49.078200000
- obs_id: C09_011T08_9000006472
- exposure: 19.1257513762
- 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_9000006472_52158cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006472_52158cztM0_level2_quad_clean.evt
|
| Size (bytes) | 815,938,560 | 66,496,320 |
| Size | 778.1 MB
| 63.4 MB
|
| Events in quadrant A | 5,149,831 | 560,261 |
| Events in quadrant B | 3,823,249 | 605,134 |
| Events in quadrant C | 8,615,773 | 408,969 |
| Events in quadrant D | 12,128,018 | 1,500 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19774 | 0 |
| B | 0 | 15686 | 0 |
| C | 0 | 29930 | 0 |
| D | 0 | 40372 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6259 | 263 | 4.201949% |
| B | 6259 | 210 | 3.355169% |
| C | 6259 | 1997 | 31.906055% |
| D | 6259 | 6246 | 99.792299% |
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 | 7019 | 6259 | 180 | 180 | 2.56% | 2.88% |  |
| B | 7019 | 6259 | 114 | 114 | 1.62% | 1.82% |  |
| C | 7019 | 6259 | 1870 | 1870 | 26.64% | 29.88% |  |
| D | 7018 | 6258 | 2966 | 2966 | 42.26% | 47.40% |  |
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 | 4 | 3 | 1071888 | 6582.26 | 648 | 630 | 162.7 |
| A | 3 | 95 | 366027 | 2245.15 | 648 | 630 | 162.7 |
| A | 4 | 95 | 237626 | 1456.2 | 648 | 630 | 162.7 |
| B | 10 | 44 | 274166 | 1999.98 | 641 | 619 | 136.8 |
| B | 10 | 254 | 253133 | 1846.2 | 641 | 619 | 136.8 |
| B | 4 | 171 | 163573 | 1191.4 | 641 | 619 | 136.8 |
| C | 15 | 224 | 4208892 | 27973.48 | 541 | 535 | 150.4 |
| C | 0 | 192 | 1063825 | 7067.82 | 541 | 535 | 150.4 |
| C | 3 | 233 | 506293 | 3361.84 | 541 | 535 | 150.4 |
| D | 12 | 1 | 10160296 | 573976.47 | 55 | 52 | 17.7 |
| D | 6 | 42 | 1537247 | 86839.82 | 55 | 52 | 17.7 |
| D | 12 | 3 | 43493 | 2454.09 | 55 | 52 | 17.7 |
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 |  |