SPACI score report for 3sdp in ASTRAL 2.07:

PDB Entry: 3sdp
SPACI score: 0.23
AEROSPACI score: 0.23

Experiment type: XRAY
Resolution: 2.1
R-factor: 0.232
PCK1 PROCHECK Ramachandran: 3
PCK2 PROCHECK Chi-1 angle: 4
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -4.99
WCK2 WHAT_CHECK Ramachandran: -7.95
WCK3 WHAT_CHECK Chi angles: -6.592
WCK4 WHAT_CHECK Backbone: -8.81

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).