Observation information
- date-obs: 2018-12-25
- time-obs: 10:18:09.389400000
- date-end: 2018-12-25
- time-end: 12:35:51.387600000
- obs_id: A05_140T01_9000002596
- exposure: 2884.29824339
- 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_17530cztM0_level2.evt
| modeM0/AS1A05_140T01_9000002596_17530cztM0_level2_quad_clean.evt
|
| Size (bytes) | 469,535,040 | 68,218,560 |
| Size | 447.8 MB
| 65.1 MB
|
| Events in quadrant A | 3,196,219 | 417,233 |
| Events in quadrant B | 3,307,956 | 419,889 |
| Events in quadrant C | 3,797,505 | 399,814 |
| Events in quadrant D | 3,494,579 | 393,250 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13227 | 2 |
| B | 0 | 13613 | 2 |
| C | 0 | 15462 | 2 |
| D | 0 | 14112 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6232 | 125 | 2.005777% |
| B | 6232 | 133 | 2.134146% |
| C | 6232 | 179 | 2.872272% |
| D | 6232 | 99 | 1.588575% |
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 | 7422 | 6232 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7422 | 6232 | 1 | 1 | 0.01% | 0.02% |  |
| C | 7422 | 6232 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7422 | 6232 | 13 | 13 | 0.18% | 0.21% |  |
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 | 7272 | 39.17 | 831 | 814 | 164.9 |
| A | 12 | 194 | 6041 | 31.7 | 831 | 814 | 164.9 |
| A | 3 | 137 | 5699 | 29.63 | 831 | 814 | 164.9 |
| B | 10 | 245 | 72228 | 463.52 | 822 | 803 | 154.1 |
| B | 12 | 111 | 18300 | 113.55 | 822 | 803 | 154.1 |
| B | 11 | 111 | 15981 | 98.5 | 822 | 803 | 154.1 |
| C | 3 | 233 | 540047 | 2936.79 | 793 | 798 | 183.6 |
| C | 14 | 238 | 123731 | 669.5 | 793 | 798 | 183.6 |
| C | 5 | 218 | 38946 | 207.76 | 793 | 798 | 183.6 |
| D | 5 | 222 | 288848 | 1469.52 | 809 | 786 | 196.0 |
| D | 13 | 189 | 73809 | 372.52 | 809 | 786 | 196.0 |
| D | 7 | 223 | 30621 | 152.2 | 809 | 786 | 196.0 |
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 |  |