Observation information
- date-obs: 2018-11-07
- time-obs: 13:01:59.669700000
- date-end: 2018-11-07
- time-end: 15:07:26.665700000
- obs_id: A05_140T01_9000002496
- exposure: 2690.90726729
- 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_16821cztM0_level2.evt
| modeM0/AS1A05_140T01_9000002496_16821cztM0_level2_quad_clean.evt
|
| Size (bytes) | 640,658,880 | 64,491,840 |
| Size | 611.0 MB
| 61.5 MB
|
| Events in quadrant A | 5,678,477 | 356,940 |
| Events in quadrant B | 3,644,905 | 396,235 |
| Events in quadrant C | 4,757,494 | 376,833 |
| Events in quadrant D | 4,882,251 | 369,346 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21100 | 2 |
| B | 0 | 14642 | 1 |
| C | 0 | 18250 | 1 |
| D | 0 | 18844 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6492 | 967 | 14.895256% |
| B | 6492 | 160 | 2.464572% |
| C | 6492 | 523 | 8.056069% |
| D | 6492 | 396 | 6.099815% |
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 | 7528 | 6494 | 561 | 561 | 7.45% | 8.64% |  |
| B | 7528 | 6494 | 5 | 5 | 0.07% | 0.08% |  |
| C | 7528 | 6494 | 218 | 218 | 2.90% | 3.36% |  |
| D | 7528 | 6494 | 187 | 187 | 2.48% | 2.88% |  |
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 | 15 | 174 | 2584126 | 16035.13 | 801 | 784 | 161.1 |
| A | 9 | 143 | 18313 | 108.8 | 801 | 784 | 161.1 |
| A | 0 | 226 | 7227 | 39.99 | 801 | 784 | 161.1 |
| B | 15 | 35 | 107426 | 676.8 | 835 | 815 | 157.5 |
| B | 0 | 229 | 69713 | 437.39 | 835 | 815 | 157.5 |
| B | 10 | 16 | 55822 | 349.2 | 835 | 815 | 157.5 |
| C | 3 | 233 | 1339285 | 7349.64 | 789 | 795 | 182.1 |
| C | 0 | 207 | 216725 | 1185.67 | 789 | 795 | 182.1 |
| C | 14 | 238 | 120649 | 658.12 | 789 | 795 | 182.1 |
| D | 1 | 52 | 1481873 | 7537.21 | 805 | 780 | 196.5 |
| D | 5 | 222 | 142604 | 721.74 | 805 | 780 | 196.5 |
| D | 2 | 33 | 99585 | 502.81 | 805 | 780 | 196.5 |
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 |  |