SPACI score report for 1q90 in ASTRAL 1.69:

PDB Entry: 1q90
SPACI score: 0.21
AEROSPACI score: 0.21

Experiment type: XRAY
Resolution: 3.1
R-factor: 0.222
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.378
WCK2 WHAT_CHECK Ramachandran: -3.801
WCK3 WHAT_CHECK Chi angles: -1.563
WCK4 WHAT_CHECK Backbone: -3.724

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).