Observation information
- date-obs: 2019-07-08
- time-obs: 05:30:53.403200000
- date-end: 2019-07-08
- time-end: 07:33:16.396400000
- obs_id: A05_140T01_9000003016
- exposure: 4946.38164976
- 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_9000003016_20413cztM0_level2.evt
| modeM0/AS1A05_140T01_9000003016_20413cztM0_level2_quad_clean.evt
|
| Size (bytes) | 495,322,560 | 102,179,520 |
| Size | 472.4 MB
| 97.4 MB
|
| Events in quadrant A | 3,452,585 | 665,297 |
| Events in quadrant B | 3,543,785 | 665,525 |
| Events in quadrant C | 3,505,530 | 636,784 |
| Events in quadrant D | 4,011,546 | 627,492 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 2 | 0 |
| B | 0 | 2 | 0 |
| C | 0 | 2 | 0 |
| D | 0 | 2 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14735 | 1 |
| B | 0 | 14921 | 1 |
| C | 0 | 14790 | 1 |
| D | 0 | 16746 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7168 | 152 | 2.120536% |
| B | 7169 | 162 | 2.259729% |
| C | 7169 | 205 | 2.859534% |
| D | 7169 | 313 | 4.366020% |
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 | 7343 | 7170 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7344 | 7171 | 2 | 2 | 0.03% | 0.03% |  |
| C | 7344 | 7171 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7344 | 7171 | 135 | 135 | 1.84% | 1.88% |  |
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 | 11 | 29 | 17591 | 92.55 | 891 | 873 | 180.6 |
| A | 0 | 226 | 7672 | 37.64 | 891 | 873 | 180.6 |
| A | 3 | 137 | 7507 | 36.73 | 891 | 873 | 180.6 |
| B | 0 | 189 | 29987 | 171.04 | 882 | 858 | 170.3 |
| B | 10 | 245 | 27867 | 158.6 | 882 | 858 | 170.3 |
| B | 12 | 111 | 21015 | 118.36 | 882 | 858 | 170.3 |
| C | 14 | 238 | 135634 | 673.46 | 853 | 860 | 200.1 |
| C | 8 | 128 | 13593 | 63.63 | 853 | 860 | 200.1 |
| C | 7 | 220 | 9515 | 43.25 | 853 | 860 | 200.1 |
| D | 13 | 153 | 481100 | 2282.14 | 860 | 835 | 210.4 |
| D | 1 | 52 | 259364 | 1228.49 | 860 | 835 | 210.4 |
| D | 2 | 234 | 31300 | 144.76 | 860 | 835 | 210.4 |
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 |  |