SPACI score report for 3cs4 in ASTRAL 2.01:

PDB Entry: 3cs4
SPACI score: 0.48
AEROSPACI score: 0.48

Experiment type: XRAY
Resolution: 2
R-factor: 0.186
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -0.54
WCK2 WHAT_CHECK Ramachandran: 0.36
WCK3 WHAT_CHECK Chi angles: 1.158
WCK4 WHAT_CHECK Backbone: 0.088

Note: Here are links to pages about PROCHECK and WHAT_CHECK.

Here is the full WHAT_CHECK report on this protein (linked from the WHAT_CHECK site).