SPACI score report for 2rfz in ASTRAL 2.06:

PDB Entry: 2rfz
SPACI score: 0.34
AEROSPACI score: 0.34

Experiment type: XRAY
Resolution: 1.8
R-factor: 0.261
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.882
WCK2 WHAT_CHECK Ramachandran: -4.19
WCK3 WHAT_CHECK Chi angles: -5.634
WCK4 WHAT_CHECK Backbone: 0.164

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).