  We study the graded geometric point of view of curvature and torsion of
Q-manifolds (differential graded manifolds). In particular, we get a natural
graded geometric definition of Courant algebroid curvature and torsion, which
correctly restrict to Dirac structures. Depending on an auxiliary affine
connection K, we introduce the K-curvature and K-torsion of a Courant algebroid
connection. These are conventional tensors on the body. Finally, we compute
their Ricci and scalar curvature.
