Observation information
- date-obs: 2018-07-27
- time-obs: 15:08:57.415300000
- date-end: 2018-07-27
- time-end: 17:15:47.419700000
- obs_id: A04_223T01_9000002258
- exposure: 4974.83147995
- sourceid: 4U 1812-12
- observer: gaurava
- ra_pnt: 273.7756
- dec_pnt: -12.09631
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A04_223T01_9000002258_15298cztM0_level2.evt
| modeM0/AS1A04_223T01_9000002258_15298cztM0_level2_quad_clean.evt
|
| Size (bytes) | 473,302,080 | 113,316,480 |
| Size | 451.4 MB
| 108.1 MB
|
| Events in quadrant A | 3,314,225 | 765,975 |
| Events in quadrant B | 3,809,177 | 764,418 |
| Events in quadrant C | 3,488,829 | 742,961 |
| Events in quadrant D | 3,290,727 | 715,795 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 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 | 13975 | 2 |
| B | 0 | 15579 | 1 |
| C | 0 | 14418 | 1 |
| D | 0 | 14021 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6345 | 85 | 1.339638% |
| B | 6345 | 190 | 2.994484% |
| C | 6345 | 62 | 0.977147% |
| D | 6345 | 90 | 1.418440% |
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 | 7611 | 6346 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7611 | 6346 | 78 | 78 | 1.02% | 1.23% |  |
| C | 7611 | 6346 | 5 | 5 | 0.07% | 0.08% |  |
| D | 7611 | 6346 | 14 | 14 | 0.18% | 0.22% |  |
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 | 9 | 143 | 29043 | 163.76 | 855 | 838 | 172.2 |
| A | 0 | 226 | 7846 | 40.69 | 855 | 838 | 172.2 |
| A | 12 | 194 | 6356 | 32.04 | 855 | 838 | 172.2 |
| B | 10 | 16 | 335805 | 2135.59 | 835 | 816 | 156.9 |
| B | 3 | 64 | 64565 | 406.4 | 835 | 816 | 156.9 |
| B | 0 | 197 | 38658 | 241.24 | 835 | 816 | 156.9 |
| C | 3 | 233 | 295932 | 1596.19 | 811 | 817 | 184.9 |
| C | 4 | 254 | 27089 | 142.1 | 811 | 817 | 184.9 |
| C | 13 | 61 | 5903 | 27.51 | 811 | 817 | 184.9 |
| D | 5 | 222 | 39842 | 197.6 | 823 | 800 | 197.6 |
| D | 13 | 122 | 35461 | 175.43 | 823 | 800 | 197.6 |
| D | 10 | 253 | 33333 | 164.66 | 823 | 800 | 197.6 |
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 |  |