Observation information
- date-obs: 2025-08-02
- time-obs: 15:14:50.213600000
- date-end: 2025-08-02
- time-end: 17:23:18.196400000
- obs_id: C09_011T08_9000006492
- exposure: 5189.71419978
- 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_9000006492_53264cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53264cztM0_level2_quad_clean.evt
|
| Size (bytes) | 581,932,800 | 93,182,400 |
| Size | 555.0 MB
| 88.9 MB
|
| Events in quadrant A | 4,840,005 | 623,639 |
| Events in quadrant B | 3,639,735 | 691,633 |
| Events in quadrant C | 7,922,473 | 477,150 |
| Events in quadrant D | 4,618,632 | 561,543 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19067 | 2 |
| B | 0 | 15480 | 2 |
| C | 0 | 28340 | 5 |
| D | 0 | 18364 | 2 |
| 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 SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6703 | 401 | 5.982396% |
| B | 6704 | 121 | 1.804893% |
| C | 6703 | 1674 | 24.973892% |
| D | 6703 | 389 | 5.803372% |
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 | 7708 | 6703 | 355 | 355 | 4.61% | 5.30% |  |
| B | 7709 | 6704 | 58 | 58 | 0.75% | 0.87% |  |
| C | 7708 | 6703 | 1467 | 1467 | 19.03% | 21.89% |  |
| D | 7708 | 6703 | 343 | 343 | 4.45% | 5.12% |  |
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 | 62 | 1044119 | 5918.74 | 706 | 689 | 176.3 |
| A | 7 | 206 | 248230 | 1404.15 | 706 | 689 | 176.3 |
| A | 3 | 14 | 245081 | 1386.29 | 706 | 689 | 176.3 |
| B | 2 | 249 | 196805 | 1300.1 | 709 | 686 | 150.8 |
| B | 4 | 171 | 123393 | 813.44 | 709 | 686 | 150.8 |
| B | 0 | 213 | 99432 | 654.6 | 709 | 686 | 150.8 |
| C | 9 | 38 | 2252210 | 13193.93 | 626 | 620 | 170.7 |
| C | 15 | 224 | 1084218 | 6349.7 | 626 | 620 | 170.7 |
| C | 15 | 198 | 1008245 | 5904.51 | 626 | 620 | 170.7 |
| D | 10 | 172 | 630906 | 3227.96 | 686 | 656 | 195.2 |
| D | 3 | 12 | 504981 | 2583.01 | 686 | 656 | 195.2 |
| D | 12 | 3 | 200520 | 1023.65 | 686 | 656 | 195.2 |
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 |  |