SPACI score report for 1drq in ASTRAL 1.57:

PDB Entry: 1drq
SPACI score: 0.32
AEROSPACI score: 0.32

Experiment type: XRAY
Resolution: 2.7
R-factor: 0.189
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.545
WCK2 WHAT_CHECK Ramachandran: -2.218
WCK3 WHAT_CHECK Chi angles: -0.587
WCK4 WHAT_CHECK Backbone: 0.679

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).