Observation information
- date-obs: 2018-11-07
- time-obs: 09:32:46.677600000
- date-end: 2018-11-07
- time-end: 11:32:06.672100000
- obs_id: A05_140T01_9000002496
- exposure: 3337.31911393
- sourceid: Vela X-1
- observer: Kmukerjee
- ra_pnt: 135.5286
- dec_pnt: -40.5547
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A05_140T01_9000002496_16819cztM0_level2.evt
| modeM0/AS1A05_140T01_9000002496_16819cztM0_level2_quad_clean.evt
|
| Size (bytes) | 541,491,840 | 83,606,400 |
| Size | 516.4 MB
| 79.7 MB
|
| Events in quadrant A | 3,450,709 | 545,771 |
| Events in quadrant B | 3,688,398 | 553,859 |
| Events in quadrant C | 3,250,121 | 525,476 |
| Events in quadrant D | 5,612,731 | 496,911 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 120 | 0 |
| B | 0 | 120 | 0 |
| C | 0 | 120 | 0 |
| D | 0 | 120 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13752 | 2 |
| B | 0 | 14632 | 1 |
| C | 0 | 13149 | 1 |
| D | 0 | 20735 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5860 | 185 | 3.156997% |
| B | 5860 | 125 | 2.133106% |
| C | 5860 | 123 | 2.098976% |
| D | 5860 | 667 | 11.382253% |
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 | 7161 | 5862 | 79 | 79 | 1.10% | 1.35% |  |
| B | 7161 | 5862 | 27 | 27 | 0.38% | 0.46% |  |
| C | 7161 | 5862 | 10 | 10 | 0.14% | 0.17% |  |
| D | 7161 | 5862 | 427 | 427 | 5.96% | 7.28% |  |
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 | 386979 | 2435.61 | 794 | 780 | 158.6 |
| A | 9 | 143 | 13703 | 81.5 | 794 | 780 | 158.6 |
| A | 0 | 226 | 7295 | 41.09 | 794 | 780 | 158.6 |
| B | 7 | 220 | 183375 | 1242.11 | 787 | 770 | 147.0 |
| B | 15 | 35 | 114143 | 771.18 | 787 | 770 | 147.0 |
| B | 0 | 189 | 103974 | 702.01 | 787 | 770 | 147.0 |
| C | 14 | 238 | 118573 | 671.9 | 759 | 766 | 175.3 |
| C | 0 | 207 | 86843 | 490.93 | 759 | 766 | 175.3 |
| C | 3 | 233 | 83604 | 472.46 | 759 | 766 | 175.3 |
| D | 1 | 52 | 2501401 | 13699.73 | 748 | 727 | 182.5 |
| D | 15 | 0 | 95486 | 519.13 | 748 | 727 | 182.5 |
| D | 2 | 33 | 81611 | 443.12 | 748 | 727 | 182.5 |
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 |  |