You can reference every graph produced through ODS Graphics with a name. The names of the graphs that PROC TTEST generates are listed in Table 119.7, along with the required statements and options.
Table 119.7: Graphs Produced by PROC TTEST
ODS Graph Name 
Plot Description 
Option 

AgreementOfPeriods 
Plot of period 2 against period 1 response values for an AB/BA crossover design 
VAR
/ CROSSOVER=

AgreementOfTreatments 
Plot of second treatment against first treatment response values for an AB/BA crossover design 

AgreementPlot 
Plot of second response against first response for a paired design 

BoxPlot 
Box plots, also with confidence band for onesample or paired design 

Histogram 
Histograms with overlaid kernel densities, and also normal densities if DIST= NORMAL 

Interval 
Confidence intervals for means 

ProfilesOverPrd 
Plot of response profiles over periods 1 and 2 for an AB/BA crossover design 
VAR
/ CROSSOVER=

ProfilesOverTrt 
Plot of response profiles over first and second treatments for an AB/BA crossover design 

ProfilesPlot 
Plot of response profiles over first and second response values for a paired design 

QQPlot 
Normal quantilequantile plots 

SummaryPanel 
Histograms with overlaid kernel densities (and also normal densities if DIST= NORMAL) and box plots (and also with confidence band for onesample or paired design) 