I was awarded a PhD in Astronomy by the University of Cambridge on Oct 20, 2021. Please find the link to my thesis here. All research work (Chapters 3-7) from my thesis are now published in MNRAS and A&A. A major part of my thesis involved reducing GMOS/IFU data from Gemini Telescope on Mauna Kea, which I learnt from Prof Mike Irwin. The details of different steps of data reduction are found in Chapter 2 of my thesis.