SPACI score report for 1di6 in ASTRAL 2.07:

PDB Entry: 1di6
SPACI score: 0.67
AEROSPACI score: 0.67

Experiment type: XRAY
Resolution: 1.45
R-factor: 0.187
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -1.521
WCK2 WHAT_CHECK Ramachandran: -1.271
WCK3 WHAT_CHECK Chi angles: 1.158
WCK4 WHAT_CHECK Backbone: 0.2

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).