Observation information
- date-obs: 2019-07-08
- time-obs: 14:21:17.377200000
- date-end: 2019-07-08
- time-end: 16:18:31.370000000
- obs_id: A05_140T01_9000003016
- exposure: 3938.32235955
- 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_20419cztM0_level2.evt
| modeM0/AS1A05_140T01_9000003016_20419cztM0_level2_quad_clean.evt
|
| Size (bytes) | 425,819,520 | 84,072,960 |
| Size | 406.1 MB
| 80.2 MB
|
| Events in quadrant A | 2,892,128 | 545,542 |
| Events in quadrant B | 2,933,879 | 544,568 |
| Events in quadrant C | 2,871,138 | 520,294 |
| Events in quadrant D | 3,784,618 | 510,071 |
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 M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12563 | 1 |
| B | 0 | 12544 | 1 |
| C | 0 | 12546 | 1 |
| D | 0 | 15326 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6084 | 26 | 0.427350% |
| B | 6085 | 34 | 0.558751% |
| C | 6085 | 37 | 0.608053% |
| D | 6085 | 159 | 2.612983% |
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 | 7034 | 6085 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7035 | 6085 | 1 | 1 | 0.01% | 0.02% |  |
| C | 7035 | 6086 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7035 | 6086 | 169 | 169 | 2.40% | 2.78% |  |
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 | 5 | 16 | 26734 | 174.49 | 739 | 725 | 149.1 |
| A | 12 | 16 | 12766 | 80.78 | 739 | 725 | 149.1 |
| A | 12 | 194 | 6951 | 41.77 | 739 | 725 | 149.1 |
| B | 0 | 189 | 38949 | 269.74 | 729 | 711 | 141.8 |
| B | 12 | 111 | 17039 | 115.18 | 729 | 711 | 141.8 |
| B | 0 | 197 | 15192 | 102.15 | 729 | 711 | 141.8 |
| C | 14 | 238 | 108980 | 658.71 | 695 | 699 | 164.4 |
| C | 7 | 220 | 28357 | 168.25 | 695 | 699 | 164.4 |
| C | 3 | 233 | 25044 | 148.1 | 695 | 699 | 164.4 |
| D | 2 | 16 | 996960 | 5743.81 | 706 | 685 | 173.5 |
| D | 1 | 52 | 67975 | 387.95 | 706 | 685 | 173.5 |
| D | 2 | 234 | 27499 | 154.59 | 706 | 685 | 173.5 |
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 |  |