Observation information
- date-obs: 2025-05-16
- time-obs: 15:10:48.807600000
- date-end: 2025-05-16
- time-end: 17:07:15.792100000
- obs_id: C09_011T07_9000006470
- exposure: 823.897173345
- 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_52105cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52105cztM0_level2_quad_clean.evt
|
| Size (bytes) | 917,360,640 | 62,896,320 |
| Size | 874.9 MB
| 60.0 MB
|
| Events in quadrant A | 3,020,604 | 574,722 |
| Events in quadrant B | 4,248,310 | 591,287 |
| Events in quadrant C | 11,711,304 | 258,137 |
| Events in quadrant D | 14,529,011 | 74,192 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 118 | 0 |
| B | 0 | 118 | 0 |
| C | 0 | 118 | 0 |
| D | 0 | 118 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12877 | 1 |
| B | 0 | 16531 | 1 |
| C | 0 | 38767 | 1 |
| D | 0 | 47145 | 7 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5802 | 97 | 1.671837% |
| B | 5803 | 403 | 6.944684% |
| C | 5803 | 3523 | 60.709978% |
| D | 5802 | 5146 | 88.693554% |
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 | 6987 | 5803 | 31 | 31 | 0.44% | 0.53% |  |
| B | 6988 | 5804 | 214 | 214 | 3.06% | 3.69% |  |
| C | 6988 | 5804 | 2963 | 2963 | 42.40% | 51.05% |  |
| D | 6987 | 5803 | 5095 | 5095 | 72.92% | 87.80% |  |
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 | 8 | 43 | 204984 | 1346.57 | 620 | 607 | 151.8 |
| A | 4 | 3 | 112994 | 740.48 | 620 | 607 | 151.8 |
| A | 13 | 248 | 44450 | 288.87 | 620 | 607 | 151.8 |
| B | 8 | 3 | 701920 | 5539.44 | 608 | 589 | 126.6 |
| B | 10 | 44 | 291412 | 2297.06 | 608 | 589 | 126.6 |
| B | 4 | 171 | 143220 | 1126.57 | 608 | 589 | 126.6 |
| C | 5 | 80 | 4687681 | 37606.26 | 450 | 445 | 124.6 |
| C | 15 | 224 | 3063465 | 24574.98 | 450 | 445 | 124.6 |
| C | 10 | 171 | 585200 | 4691.56 | 450 | 445 | 124.6 |
| D | 6 | 42 | 10085329 | 107308.18 | 329 | 314 | 94.0 |
| D | 15 | 94 | 2465027 | 26225.43 | 329 | 314 | 94.0 |
| D | 11 | 176 | 129519 | 1374.78 | 329 | 314 | 94.0 |
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 |  |