Observation information
- date-obs: 2025-05-19
- time-obs: 09:00:39.262100000
- date-end: 2025-05-19
- time-end: 11:03:07.245300000
- obs_id: C09_011T07_9000006470
- exposure: 2550.23690528
- 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_011T07_9000006470_52146cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52146cztM0_level2_quad_clean.evt
|
| Size (bytes) | 834,943,680 | 76,354,560 |
| Size | 796.3 MB
| 72.8 MB
|
| Events in quadrant A | 4,751,915 | 570,535 |
| Events in quadrant B | 4,741,315 | 608,672 |
| Events in quadrant C | 7,121,010 | 466,641 |
| Events in quadrant D | 13,800,875 | 222,486 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| 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 M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18378 | 5 |
| B | 0 | 18444 | 2 |
| C | 0 | 25629 | 1 |
| D | 0 | 45302 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6352 | 517 | 8.139169% |
| B | 6353 | 555 | 8.736030% |
| C | 6354 | 1504 | 23.670129% |
| D | 6353 | 4258 | 67.023453% |
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 | 7348 | 6353 | 402 | 402 | 5.47% | 6.33% |  |
| B | 7348 | 6354 | 406 | 406 | 5.53% | 6.39% |  |
| C | 7349 | 6355 | 1349 | 1349 | 18.36% | 21.23% |  |
| D | 7348 | 6353 | 4205 | 4205 | 57.23% | 66.19% |  |
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 | 95 | 1139358 | 6877.66 | 663 | 647 | 165.6 |
| A | 15 | 174 | 180795 | 1088.07 | 663 | 647 | 165.6 |
| A | 14 | 254 | 162453 | 977.29 | 663 | 647 | 165.6 |
| B | 4 | 81 | 1075768 | 7839.02 | 644 | 623 | 137.2 |
| B | 5 | 185 | 415658 | 3026.07 | 644 | 623 | 137.2 |
| B | 10 | 254 | 145238 | 1054.41 | 644 | 623 | 137.2 |
| C | 15 | 224 | 2455890 | 14888.0 | 585 | 577 | 164.9 |
| C | 6 | 252 | 844297 | 5115.97 | 585 | 577 | 164.9 |
| C | 1 | 45 | 600118 | 3635.37 | 585 | 577 | 164.9 |
| D | 6 | 42 | 10325968 | 71678.72 | 499 | 477 | 144.1 |
| D | 15 | 94 | 469968 | 3259.17 | 499 | 477 | 144.1 |
| D | 12 | 3 | 232744 | 1612.38 | 499 | 477 | 144.1 |
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 |  |