Just note that the Context Sensitive Grammar is represented as:
α -----> β , |α| ≤ |β| and α, β ϵ (V+T)+ (where, V : Non-terminal and T : Terminal)
That is (V+T)+ ------> (V+T)+ (where LHS is subset of RHS, LHS ≤ RHS ) also add the production S -----> λ (as CSG cannot generate λ)
So any productions folllowing the above format is a CSG.