  Our nearest stellar neighbour, Proxima Centauri, is a low mass star with
spectral typedM5.5 and hosting an Earth-like planet orbiting within its
habitable zone. However, the habitability of the planet depends on the
high-energy radiation of the chromo-spheric and coronal activity of the host
star. We report the Astrosat, Chandra and HST observation of Proxima Centauri
carried out as part of the multi-wavelength simultaneous observational
campaign. Using the soft X-ray data, we probe the different activity states of
the star. We investigate the coronal temperatures, emission measures and
abundance. Finally, we compare our results with earlier observations of Proxima
Centauri
