SPACI score report for 1kfx in ASTRAL 1.73:

PDB Entry: 1kfx
SPACI score: 0.11
AEROSPACI score: 0.11

Experiment type: XRAY
Resolution: 3.15
R-factor: 0.243
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -1.665
WCK2 WHAT_CHECK Ramachandran: -6.357
WCK3 WHAT_CHECK Chi angles: -3.886
WCK4 WHAT_CHECK Backbone: -7.05

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).