1. School of Computing, University of South Africa, Johannesburg 1710, South Africa
2. Computer Systems Engineering, Faculty of Information and Communication Technology, Tshwane University of Technology, Pretoria 0001, South Africa
3. CASEST, School of Physics, University of Hyderabad, Hyderabad 500046, India
4. Silicon Institute of Technology, Bhubaneswar 751024, India
5. Department of Electrical Engineering, Faculty of Engineering and Built Environment, Tshwane University of Technology, Pretoria 0001, South Africa
6. Department of Physics, CSET, University of South Africa, Johannesburg 1710, South Africa
7. Department of Physics, Indian Institute of Technology, Guwahati 781039, India