Salary expectation for a DevOps Engineer with 3+ YOE

I am a DevOps Engineer in a series C funded startup. My current compensation is 40LPA, which included 38LPA fixed, and 2LPA performance bonus. I want to understand what my realistic expectations should be if I look out for another job. I am open to all types of companies, be it a MNC or a well established startup. I can be wrong by a huge margin, but I was expecting somewhere around 75LPA CTC with 70LPA fixed, given the fact that my promotion is due this upcoming December and I am expecting atleast 20% hike on my current CTC and in hand compensation. What are your thoughts on this. And if possible, can you guys also tell me what I should be prepared for if I get an interview opportunity for a senior level DevOps Engineer.