SPACI score report for 3ka9 in ASTRAL 2.04:

PDB Entry: 3ka9
SPACI score: 0.73
AEROSPACI score: 0.73

Experiment type: XRAY
Resolution: 1.45
R-factor: 0.131
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.191
WCK2 WHAT_CHECK Ramachandran: 2.619
WCK3 WHAT_CHECK Chi angles: 1.026
WCK4 WHAT_CHECK Backbone: 1.172

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).