This is the district prior to being redrawn a few years back:
I can't locate a good copy of the current district, but we can see it by going to district viewer.
Click here for it.
I'm unaware of places where we can get info on the design of the district - and the degree to which it has been gerrymandered - if at all. But notice that the new district it neatly follows the Fort Bend county line to the west, but that certain parts of Fort Bend in the north are carved out. These happen to be areas with high percentages of African American residents. They are in the 9th District which is represented by Al Green - an African American Democrat. Pete Olson is an Anglo Republican.
The district also contains parts of northern Brazoria County a small piece of southern Harris County. I can't tell from this map, but a previous version of the district contained the Johnson Space Center, which explained Olson's concern with manned space flight.