SPACI score report for 2xj3 in ASTRAL 2.06:

PDB Entry: 2xj3
SPACI score: 0.83
AEROSPACI score: 0.83

Experiment type: XRAY
Resolution: 1.23
R-factor: 0.148
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.916
WCK2 WHAT_CHECK Ramachandran: 0.383
WCK3 WHAT_CHECK Chi angles: 3.102
WCK4 WHAT_CHECK Backbone: 5.295

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).