The ornamental design for a datadoor for an analysis system, as shown and described.
FIG. 1 is a front perspective view of a data door for an analysis system showing our new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 shows the data door of FIG. 1 in an environment in which it may be used. The broken lines illustrate environmental subject matters and form no part of the claimed design.