SPACI score report for 2cax in ASTRAL 2.03:

PDB Entry: 2cax
SPACI score: 0.24
AEROSPACI score: 0.24

Experiment type: XRAY
Resolution: 2.9
R-factor: 0.21
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.322
WCK2 WHAT_CHECK Ramachandran: -3.673
WCK3 WHAT_CHECK Chi angles: -3.536
WCK4 WHAT_CHECK Backbone: 0.48

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).