Observation information
- date-obs: 2018-11-07
- time-obs: 02:45:50.693100000
- date-end: 2018-11-07
- time-end: 09:50:05.676600000
- obs_id: A05_140T01_9000002496
- exposure: 12175.2573126
- 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_16818cztM0_level2.evt
| modeM0/AS1A05_140T01_9000002496_16818cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,769,466,240 | 278,452,800 |
| Size | 1.6 GB
| 265.6 MB
|
| Events in quadrant A | 12,704,268 | 1,761,449 |
| Events in quadrant B | 11,859,076 | 1,813,197 |
| Events in quadrant C | 11,236,877 | 1,746,182 |
| Events in quadrant D | 16,377,322 | 1,670,744 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 426 | 0 |
| B | 0 | 426 | 0 |
| C | 0 | 426 | 0 |
| D | 0 | 426 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 50887 | 5 |
| B | 0 | 48380 | 4 |
| C | 0 | 46021 | 4 |
| D | 0 | 62676 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 46 | 0 |
| B | 0 | 46 | 0 |
| C | 0 | 46 | 0 |
| D | 0 | 46 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 20944 | 722 | 3.447288% |
| B | 20944 | 317 | 1.513560% |
| C | 20944 | 272 | 1.298701% |
| D | 20944 | 1252 | 5.977846% |
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 | 25456 | 20949 | 400 | 400 | 1.57% | 1.91% |  |
| B | 25456 | 20949 | 59 | 59 | 0.23% | 0.28% |  |
| C | 25456 | 20949 | 1 | 1 | 0.00% | 0.00% |  |
| D | 25456 | 20949 | 870 | 870 | 3.42% | 4.15% |  |
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 | 2461776 | 4699.9 | 2623 | 2574 | 523.2 |
| A | 9 | 143 | 166632 | 313.54 | 2623 | 2574 | 523.2 |
| A | 0 | 226 | 22987 | 39.01 | 2623 | 2574 | 523.2 |
| B | 15 | 35 | 535535 | 1083.67 | 2629 | 2569 | 491.8 |
| B | 7 | 220 | 286454 | 577.22 | 2629 | 2569 | 491.8 |
| B | 0 | 189 | 233047 | 468.63 | 2629 | 2569 | 491.8 |
| C | 3 | 233 | 614103 | 1039.11 | 2558 | 2582 | 588.5 |
| C | 14 | 238 | 397163 | 670.48 | 2558 | 2582 | 588.5 |
| C | 0 | 207 | 248932 | 418.6 | 2558 | 2582 | 588.5 |
| D | 1 | 52 | 5202371 | 8359.5 | 2552 | 2479 | 622.0 |
| D | 15 | 0 | 525208 | 840.35 | 2552 | 2479 | 622.0 |
| D | 2 | 33 | 461111 | 737.31 | 2552 | 2479 | 622.0 |
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 |  |