SPACI score report for 2xfr in ASTRAL 2.07:

PDB Entry: 2xfr
SPACI score: 1.07
AEROSPACI score: 1.07

Experiment type: XRAY
Resolution: 0.97
R-factor: 0.114
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.227
WCK2 WHAT_CHECK Ramachandran: -0.557
WCK3 WHAT_CHECK Chi angles: 1.252
WCK4 WHAT_CHECK Backbone: 2.416

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).