Observation information
- date-obs: 2019-03-05
- time-obs: 04:21:08.305400000
- date-end: 2019-03-05
- time-end: 06:33:24.309200000
- obs_id: A05_188T01_9000002756
- exposure: 4096.91720848
- sourceid: Vela Pulsar
- observer: Marion
- ra_pnt: 128.8361
- dec_pnt: -45.17643
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A05_188T01_9000002756_18562cztM0_level2.evt
| modeM0/AS1A05_188T01_9000002756_18562cztM0_level2_quad_clean.evt
|
| Size (bytes) | 548,547,840 | 84,504,960 |
| Size | 523.1 MB
| 80.6 MB
|
| Events in quadrant A | 3,908,048 | 517,135 |
| Events in quadrant B | 3,670,121 | 532,094 |
| Events in quadrant C | 3,508,191 | 504,002 |
| Events in quadrant D | 5,015,341 | 481,652 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 152 | 0 |
| B | 0 | 152 | 0 |
| C | 0 | 152 | 0 |
| D | 0 | 152 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16717 | 2 |
| B | 0 | 15880 | 2 |
| C | 0 | 15440 | 3 |
| D | 0 | 20131 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7526 | 166 | 2.205687% |
| B | 7526 | 92 | 1.222429% |
| C | 7526 | 80 | 1.062982% |
| D | 7526 | 315 | 4.185490% |
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 | 7936 | 7527 | 112 | 112 | 1.41% | 1.49% |  |
| B | 7936 | 7527 | 36 | 36 | 0.45% | 0.48% |  |
| C | 7936 | 7527 | 12 | 12 | 0.15% | 0.16% |  |
| D | 7936 | 7527 | 204 | 204 | 2.57% | 2.71% |  |
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 | 0 | 13 | 521830 | 2942.51 | 875 | 856 | 177.1 |
| A | 13 | 254 | 12256 | 64.39 | 875 | 856 | 177.1 |
| A | 0 | 226 | 7474 | 37.38 | 875 | 856 | 177.1 |
| B | 12 | 18 | 78682 | 455.15 | 889 | 866 | 171.0 |
| B | 7 | 220 | 55994 | 322.45 | 889 | 866 | 171.0 |
| B | 4 | 80 | 23148 | 130.33 | 889 | 866 | 171.0 |
| C | 14 | 238 | 132401 | 657.88 | 849 | 855 | 200.0 |
| C | 9 | 54 | 45201 | 221.78 | 849 | 855 | 200.0 |
| C | 8 | 128 | 11968 | 55.58 | 849 | 855 | 200.0 |
| D | 7 | 238 | 1309185 | 6340.06 | 844 | 817 | 206.4 |
| D | 1 | 52 | 442068 | 2138.2 | 844 | 817 | 206.4 |
| D | 7 | 38 | 50965 | 243.0 | 844 | 817 | 206.4 |
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 |  |