Add assertions for spectrum quantities.
Add assertions for spectrum quantities.

kaushik94/tardis,kaushik94/tardis,Tobychev/tardis,kaushik94/tardis,orbitfold/tardis,orbitfold/tardis,Tobychev/tardis,orbitfold/tardis,kaushik94/tardis,orbitfold/tardis,Tobychev/tardis