SPACI score report for 3cdg in ASTRAL 2.02:

PDB Entry: 3cdg
SPACI score: 0.15
AEROSPACI score: 0.15

Experiment type: XRAY
Resolution: 3.4
R-factor: 0.25
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.433
WCK2 WHAT_CHECK Ramachandran: -4.57
WCK3 WHAT_CHECK Chi angles: -3.814
WCK4 WHAT_CHECK Backbone: -0.348

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).