Observation information
- date-obs: 2018-12-25
- time-obs: 05:25:02.394500000
- date-end: 2018-12-25
- time-end: 07:23:34.392100000
- obs_id: A05_140T01_9000002596
- exposure: 3552.37098464
- 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_9000002596_17527cztM0_level2.evt
| modeM0/AS1A05_140T01_9000002596_17527cztM0_level2_quad_clean.evt
|
| Size (bytes) | 458,743,680 | 86,699,520 |
| Size | 437.5 MB
| 82.7 MB
|
| Events in quadrant A | 2,975,798 | 561,975 |
| Events in quadrant B | 3,026,700 | 574,729 |
| Events in quadrant C | 3,255,682 | 550,252 |
| Events in quadrant D | 4,237,571 | 529,824 |
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 M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12311 | 1 |
| B | 0 | 12434 | 1 |
| C | 0 | 13077 | 1 |
| D | 0 | 16199 | 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 | 5852 | 55 | 0.939850% |
| B | 5853 | 50 | 0.854263% |
| C | 5853 | 92 | 1.571843% |
| D | 5853 | 503 | 8.593883% |
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 | 7112 | 5852 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7113 | 5854 | 0 | 0 | 0.00% | 0.00% |  |
| C | 7113 | 5853 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7113 | 5853 | 398 | 398 | 5.60% | 6.80% |  |
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 | 0 | 226 | 6746 | 38.74 | 773 | 758 | 154.6 |
| A | 12 | 194 | 5738 | 32.22 | 773 | 758 | 154.6 |
| A | 3 | 137 | 5372 | 29.85 | 773 | 758 | 154.6 |
| B | 12 | 111 | 16660 | 110.71 | 769 | 750 | 143.7 |
| B | 0 | 230 | 15928 | 105.61 | 769 | 750 | 143.7 |
| B | 11 | 111 | 14593 | 96.33 | 769 | 750 | 143.7 |
| C | 3 | 233 | 151974 | 861.49 | 757 | 765 | 175.5 |
| C | 14 | 238 | 118199 | 669.06 | 757 | 765 | 175.5 |
| C | 5 | 218 | 32006 | 177.99 | 757 | 765 | 175.5 |
| D | 5 | 222 | 1135135 | 6373.03 | 739 | 719 | 178.0 |
| D | 2 | 120 | 169239 | 946.73 | 739 | 719 | 178.0 |
| D | 13 | 189 | 126428 | 706.22 | 739 | 719 | 178.0 |
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 |  |