It depends on PSU status and corresponding pay scale.
A complete list of PSU can be found here: https://en.wikipedia.org/wiki/List_of_public_sector_undertakings_in_India
It will be approximately >45K + with many other things like TA/DA , different PSUs provide different facilities.
However the salary ranges widely. PSUs like BEL , CEL will offer around 5 Lakhs PA, whereas PSUs like power grid will offer around 14 lakhs and BEL around 9 lakhs.
So, it depends on PSUs.