SPACI score report for 1tkj in ASTRAL 2.08:

PDB Entry: 1tkj
SPACI score: 0.9
AEROSPACI score: 0.9

Experiment type: XRAY
Resolution: 1.15
R-factor: 0.117
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.218
WCK2 WHAT_CHECK Ramachandran: 0.373
WCK3 WHAT_CHECK Chi angles: 0.338
WCK4 WHAT_CHECK Backbone: 0.444

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).