1. Department of Physics, Tezpur University, Napaam, 784028, India
2. Astrophysical Sciences Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
3. Homi Bhabha National Institute, Mumbai, 400094, India
4. Laboratoire Univers et Particules de Montpellier, Université de Montpellier, CNRS, Montpellier, F-34095, France