|   | 
				
					
	
		  | 
	 
	
		| Paper: | 
		On the Need for Input Data Control in Pipeline Reductions | 
	 
	
		| Volume: | 
		145, Astronomical Data Analysis Software and Systems VII | 
	 
	
		| Page: | 
		312 | 
	 
	
		| Authors: | 
		de Cuyper, J.-P.; Hensberge, H. | 
	 
	
	
		| Abstract: | 
		An analysis of series of flat-field exposures obtained in echelle mode adds support to the view that the performance of an instrument should be monitored closely and described {\em quantitatively}. This simplifies enormously the data reduction procedure and allows the user to interpret high-quality data correctly. | 
	 
	
		| 
			
			
		 | 
	 
	
		  | 
	 
 
					 
				 | 
				  |