SPACI score report for 2ctz in ASTRAL 2.08:

PDB Entry: 2ctz
SPACI score: 0.29
AEROSPACI score: 0.29

Experiment type: XRAY
Resolution: 2.6
R-factor: 0.189
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.648
WCK2 WHAT_CHECK Ramachandran: -2.697
WCK3 WHAT_CHECK Chi angles: -3.315
WCK4 WHAT_CHECK Backbone: 2.339

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).