Observation information
- date-obs: 2025-06-14
- time-obs: 18:23:07.752300000
- date-end: 2025-06-14
- time-end: 20:24:58.731200000
- obs_id: C09_011T06_9000006478
- exposure: 3720.23533058
- 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_011T06_9000006478_52538cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52538cztM0_level2_quad_clean.evt
|
| Size (bytes) | 720,999,360 | 81,708,480 |
| Size | 687.6 MB
| 77.9 MB
|
| Events in quadrant A | 2,935,445 | 629,272 |
| Events in quadrant B | 4,114,472 | 636,311 |
| Events in quadrant C | 8,112,921 | 424,296 |
| Events in quadrant D | 11,037,521 | 343,853 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13481 | 1 |
| B | 0 | 16545 | 1 |
| C | 0 | 28619 | 1 |
| D | 0 | 37107 | 1 |
| 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 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6301 | 47 | 0.745913% |
| B | 6302 | 263 | 4.173278% |
| C | 6302 | 1924 | 30.529990% |
| D | 6302 | 2888 | 45.826722% |
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 | 7311 | 6302 | 10 | 10 | 0.14% | 0.16% |  |
| B | 7311 | 6302 | 142 | 142 | 1.94% | 2.25% |  |
| C | 7312 | 6302 | 1534 | 1534 | 20.98% | 24.34% |  |
| D | 7312 | 6303 | 2557 | 2557 | 34.97% | 40.57% |  |
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 | 0 | 12 | 80792 | 473.72 | 670 | 653 | 169.2 |
| A | 4 | 249 | 68949 | 403.72 | 670 | 653 | 169.2 |
| A | 15 | 174 | 54895 | 320.64 | 670 | 653 | 169.2 |
| B | 10 | 44 | 352288 | 2578.28 | 649 | 630 | 136.4 |
| B | 5 | 172 | 260254 | 1903.51 | 649 | 630 | 136.4 |
| B | 10 | 254 | 186892 | 1365.63 | 649 | 630 | 136.4 |
| C | 15 | 224 | 3420839 | 22204.28 | 553 | 549 | 154.0 |
| C | 2 | 12 | 1425863 | 9253.04 | 553 | 549 | 154.0 |
| C | 13 | 3 | 395806 | 2565.98 | 553 | 549 | 154.0 |
| D | 6 | 42 | 2966645 | 19766.98 | 516 | 491 | 150.1 |
| D | 15 | 125 | 2166753 | 14436.36 | 516 | 491 | 150.1 |
| D | 8 | 176 | 1653349 | 11014.94 | 516 | 491 | 150.1 |
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 |  |