SPACI score report for 1tbz in ASTRAL 2.03:

PDB Entry: 1tbz
SPACI score: 0.39
AEROSPACI score: 0.39

Experiment type: XRAY
Resolution: 2.3
R-factor: 0.158
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.808
WCK2 WHAT_CHECK Ramachandran: -2.992
WCK3 WHAT_CHECK Chi angles: -3.468
WCK4 WHAT_CHECK Backbone: 0.107

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).