Observation information
- date-obs: 2025-08-08
- time-obs: 17:00:57.191900000
- date-end: 2025-08-08
- time-end: 19:05:52.001500000
- obs_id: C09_011T08_9000006492
- exposure: 1972.19551098
- 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_53354cztM0_level2.fits
| modeM0/AS1C09_011T08_9000006492_53354cztM0_level2_quad_clean.evt
|
| Size (bytes) | 845,634,240 | 72,365,760 |
| Size | 806.5 MB
| 69.0 MB
|
| Events in quadrant A | 5,553,349 | 547,389 |
| Events in quadrant B | 4,720,418 | 654,916 |
| Events in quadrant C | 12,932,693 | 197,423 |
| Events in quadrant D | 7,605,953 | 349,756 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20937 | 1 |
| B | 0 | 18450 | 1 |
| C | 0 | 42737 | 1 |
| D | 0 | 27184 | 2 |
| 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 | 6321 | 1119 | 17.702895% |
| B | 6321 | 464 | 7.340611% |
| C | 6321 | 4551 | 71.998102% |
| D | 6320 | 2608 | 41.265823% |
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 | 7495 | 6320 | 1002 | 1002 | 13.37% | 15.85% |  |
| B | 7495 | 6320 | 282 | 282 | 3.76% | 4.46% |  |
| C | 7495 | 6320 | 4346 | 4346 | 57.99% | 68.77% |  |
| D | 7495 | 6320 | 1418 | 1418 | 18.92% | 22.44% |  |
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 | 15 | 174 | 2562140 | 16429.07 | 628 | 614 | 155.9 |
| A | 3 | 62 | 153293 | 979.25 | 628 | 614 | 155.9 |
| A | 3 | 30 | 60634 | 384.96 | 628 | 614 | 155.9 |
| B | 4 | 206 | 600880 | 4236.42 | 669 | 647 | 141.7 |
| B | 0 | 171 | 382070 | 2692.07 | 669 | 647 | 141.7 |
| B | 5 | 185 | 277095 | 1951.16 | 669 | 647 | 141.7 |
| C | 15 | 178 | 5575996 | 51247.14 | 394 | 391 | 108.8 |
| C | 15 | 158 | 2665684 | 24497.55 | 394 | 391 | 108.8 |
| C | 15 | 224 | 1542503 | 14174.04 | 394 | 391 | 108.8 |
| D | 2 | 62 | 4539706 | 34745.19 | 456 | 434 | 130.6 |
| D | 6 | 239 | 809975 | 6196.51 | 456 | 434 | 130.6 |
| D | 11 | 245 | 132150 | 1008.2 | 456 | 434 | 130.6 |
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 |  |