PDS_VERSION_ID                   = PDS3                                       
RECORD_TYPE                      = STREAM                                     
DATA_SET_ID                      = "RO-X-HK-3-RWL-V1.0"                       
OBJECT                           = TEXT                                       
  PUBLICATION_DATE               = 2019-11-30                                 
  NOTE                           = "Description of the BROWSE directory       
                                    contents for Rosetta Housekeeping data    
                                    deliveries"                               
END_OBJECT                       = TEXT                                       
END                                                                           
                                                                              
                                                                              
BROWSE Directory Contents                                                     
                                                                              
The BROWSE directory contains PNG thumbnail files for browsing the data       
provided in the DATA directory.  Each file comes with a detached PDS label.   
Note that there is *not* a one to one correspondence between the DATA         
products and the BROWSE products.  Instead, BROWSE products are provided      
as yearly, quarterly or monthly overviews.                                    
                                                                              
BROWSE products are also only provided for a selected set of parameters       
in the data sets, carefully chosen as being of most interest to have as       
thumbnails to help browse through the data sets and select data and periods   
of interest.                                                                  
                                                                              
For the RWL dataset, Browse products have been produced from launch to        
the end of the mission. They are provided in yearly form (YYYY - see below)   
from launch to time when the satellite comes out of hibernation in Jan 2014   
and continue on a 3 monthly (QX - see below) basis until 30th Sept 2016.      
                                                                              
For further details of the BROWSE product implementation, please see the      
USER_GUIDE.PDF and the EAICD_HK.PDF documents in the DOCUMENT directory.      
                                                                              
The BROWSE file naming convention is defined to match with the                
<param description> part of the directory structure defined in the /DATA      
directories, i.e.                                                             
                                                                              
<parameter_id>_<YYYY>.<EXT>                                                   
or                                                                            
<parameter_id>_<YYYY_MM>.<EXT>                                                
or                                                                            
<parameter_id>_<YYYY_QX>.<EXT>                                                
                                                                              
where:                                                                        
<parameter_id>  is the housekeeping parameter presented                       
<YYYY>          is the year shown in the thumbnail                            
<YYYY_MM>       is the year and month shown in the thumbnail                  
<YYY_QX>        is the year and quarter shown in the thumbnail                
<EXT>           is either PNG for the browse file or LBL for the              
                corresponding PDS label file                                  
                                                                              
Note that for the RWL_EST_FRICT_TORQUE data, the <parameter_id> used in       
the BROWSE filenames cannot be identical to the one used in the DATA          
subdirectory, as this would break the rules on filename length in the         
PDS Standards.  As a result, the following is used for those files:           
RWL_EST_FRIC_TORQUE_YYYY_QX.<EXT>