Observation information
- date-obs: 2025-08-03
- time-obs: 05:14:59.100200000
- date-end: 2025-08-03
- time-end: 07:16:15.085800000
- obs_id: C09_011T08_9000006492
- exposure: 4876.14392972
- 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_53272cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53272cztM0_level2_quad_clean.evt
|
| Size (bytes) | 854,061,120 | 92,099,520 |
| Size | 814.5 MB
| 87.8 MB
|
| Events in quadrant A | 7,327,837 | 597,619 |
| Events in quadrant B | 7,619,579 | 649,454 |
| Events in quadrant C | 11,398,476 | 429,869 |
| Events in quadrant D | 4,706,604 | 604,574 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 27011 | 0 |
| B | 0 | 27593 | 0 |
| C | 0 | 38828 | 0 |
| D | 0 | 19233 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7276 | 1060 | 14.568444% |
| B | 7277 | 1006 | 13.824378% |
| C | 7277 | 2717 | 37.336815% |
| D | 7277 | 210 | 2.885805% |
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 | 7276 | 7276 | 1002 | 1002 | 13.77% | 13.77% |  |
| B | 7277 | 7277 | 922 | 922 | 12.67% | 12.67% |  |
| C | 7276 | 7276 | 2696 | 2696 | 37.05% | 37.05% |  |
| D | 7277 | 7277 | 230 | 230 | 3.16% | 3.16% |  |
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 | 27 | 3556357 | 20047.4 | 712 | 695 | 177.4 |
| A | 3 | 62 | 312352 | 1757.17 | 712 | 695 | 177.4 |
| A | 15 | 174 | 132261 | 741.79 | 712 | 695 | 177.4 |
| B | 10 | 254 | 2845767 | 18784.65 | 712 | 689 | 151.5 |
| B | 4 | 81 | 885321 | 5840.79 | 712 | 689 | 151.5 |
| B | 2 | 249 | 537076 | 3541.5 | 712 | 689 | 151.5 |
| C | 1 | 241 | 3789106 | 22776.62 | 601 | 593 | 166.3 |
| C | 15 | 224 | 2482220 | 14919.59 | 601 | 593 | 166.3 |
| C | 10 | 22 | 895120 | 5377.91 | 601 | 593 | 166.3 |
| D | 12 | 3 | 635688 | 3130.47 | 713 | 681 | 202.8 |
| D | 2 | 37 | 358487 | 1763.92 | 713 | 681 | 202.8 |
| D | 1 | 0 | 253083 | 1244.3 | 713 | 681 | 202.8 |
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 |  |