Observation information
- date-obs: 2019-03-12
- time-obs: 17:34:49.468900000
- date-end: 2019-03-12
- time-end: 19:41:43.474200000
- obs_id: T03_091T01_9000002790
- exposure: 4571.95785375
- sourceid: Vela X1
- observer: Kmukerjee
- ra_pnt: 135.5286
- dec_pnt: -40.55469
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T03_091T01_9000002790_18674cztM0_level2.evt
| modeM0/AS1T03_091T01_9000002790_18674cztM0_level2_quad_clean.evt
|
| Size (bytes) | 468,383,040 | 98,199,360 |
| Size | 446.7 MB
| 93.7 MB
|
| Events in quadrant A | 3,191,212 | 644,873 |
| Events in quadrant B | 3,400,919 | 657,357 |
| Events in quadrant C | 3,546,091 | 613,908 |
| Events in quadrant D | 3,601,284 | 600,336 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13721 | 1 |
| B | 0 | 14221 | 1 |
| C | 0 | 14836 | 1 |
| D | 0 | 15067 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6549 | 65 | 0.992518% |
| B | 6550 | 102 | 1.557252% |
| C | 6550 | 144 | 2.198473% |
| D | 6549 | 94 | 1.435334% |
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 | 7614 | 6550 | 6 | 6 | 0.08% | 0.09% |  |
| B | 7615 | 6551 | 12 | 12 | 0.16% | 0.18% |  |
| C | 7615 | 6551 | 18 | 18 | 0.24% | 0.27% |  |
| D | 7614 | 6550 | 49 | 49 | 0.64% | 0.75% |  |
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 | 6 | 16 | 50114 | 299.97 | 812 | 798 | 164.4 |
| A | 13 | 254 | 11148 | 62.95 | 812 | 798 | 164.4 |
| A | 11 | 29 | 10296 | 57.77 | 812 | 798 | 164.4 |
| B | 7 | 220 | 49471 | 315.0 | 815 | 794 | 154.5 |
| B | 3 | 64 | 46105 | 293.21 | 815 | 794 | 154.5 |
| B | 0 | 197 | 35458 | 224.31 | 815 | 794 | 154.5 |
| C | 9 | 54 | 355620 | 1980.85 | 765 | 771 | 179.1 |
| C | 14 | 238 | 120633 | 669.1 | 765 | 771 | 179.1 |
| C | 3 | 233 | 86043 | 476.01 | 765 | 771 | 179.1 |
| D | 1 | 52 | 621896 | 3250.35 | 776 | 751 | 191.1 |
| D | 2 | 234 | 30060 | 153.37 | 776 | 751 | 191.1 |
| D | 7 | 238 | 16476 | 82.29 | 776 | 751 | 191.1 |
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 |  |