Not op but raita is just a thinned yogurt and cucumber. It's one of those "made by feel" things so while there are online recipes with ratios it should be made to a texture you like. The cuke is usually shredded but can be minced or grated as well ( and combos exist as well). There's a lot of variations which include other things like tomato, green chillies, or spices.
Op appears to have made a thicker version with some mint added.
It's massive in that I don't know if America has had a military parade since the world wars so anything is a lot. It also somehow tens of millions of taxpayer money as they continue hypocritically spouting about government waste.