Observation information
- date-obs: 2025-06-17
- time-obs: 22:39:40.149900000
- date-end: 2025-06-18
- time-end: 00:44:04.133200000
- obs_id: C09_011T06_9000006478
- exposure: 4900.53823072
- 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_52585cztM0_level2.fits
| modeM0/AS1C09_011T06_9000006478_52585cztM0_level2_quad_clean.evt
|
| Size (bytes) | 601,277,760 | 84,813,120 |
| Size | 573.4 MB
| 80.9 MB
|
| Events in quadrant A | 3,586,346 | 603,723 |
| Events in quadrant B | 4,584,898 | 597,449 |
| Events in quadrant C | 6,662,159 | 453,418 |
| Events in quadrant D | 6,932,835 | 471,317 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15408 | 1 |
| B | 0 | 18277 | 1 |
| C | 0 | 24351 | 1 |
| D | 0 | 25111 | 1 |
| 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 SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6329 | 125 | 1.975036% |
| B | 6330 | 655 | 10.347551% |
| C | 6330 | 1487 | 23.491311% |
| D | 6330 | 1099 | 17.361769% |
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 | 7464 | 6330 | 116 | 116 | 1.55% | 1.83% |  |
| B | 7465 | 6330 | 511 | 511 | 6.85% | 8.07% |  |
| C | 7465 | 6330 | 1328 | 1328 | 17.79% | 20.98% |  |
| D | 7465 | 6331 | 961 | 961 | 12.87% | 15.18% |  |
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 | 249 | 415615 | 2590.87 | 651 | 637 | 160.2 |
| A | 5 | 243 | 185487 | 1154.09 | 651 | 637 | 160.2 |
| A | 3 | 14 | 136176 | 846.22 | 651 | 637 | 160.2 |
| B | 1 | 238 | 1061036 | 8154.37 | 617 | 594 | 130.0 |
| B | 4 | 171 | 406190 | 3118.87 | 617 | 594 | 130.0 |
| B | 10 | 254 | 119180 | 911.88 | 617 | 594 | 130.0 |
| C | 15 | 248 | 3866766 | 24908.95 | 550 | 544 | 155.2 |
| C | 15 | 178 | 167566 | 1076.07 | 550 | 544 | 155.2 |
| C | 10 | 22 | 167250 | 1074.04 | 550 | 544 | 155.2 |
| D | 15 | 125 | 1730479 | 10181.77 | 585 | 556 | 169.9 |
| D | 8 | 176 | 1709255 | 10056.85 | 585 | 556 | 169.9 |
| D | 11 | 176 | 256111 | 1504.11 | 585 | 556 | 169.9 |
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 |  |