SPACI score report for 2rta in ASTRAL 2.08:

PDB Entry: 2rta
SPACI score: 0.65
AEROSPACI score: 0.65

Experiment type: XRAY
Resolution: 1.39
R-factor: 0.206
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.407
WCK2 WHAT_CHECK Ramachandran: -2.791
WCK3 WHAT_CHECK Chi angles: -2.212
WCK4 WHAT_CHECK Backbone: 2.085

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).