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DTAS input data files consist of the fully converted engineering data values of spacecraft status information. The files are comma-delimited ASCII text files consisting of a header line followed by any number of data lines.
The header line is formated as follows:
time_stamp_mnemonic,data_point_mnemonic1,data_point_mnemonic2,data_point_mnemonic3,...,data_point_mnemonicN
Each data line that follows has this format:
time_stamp,data_value1,data_value2,data_value3,...,data_valueN
The is a one-to-one mapping of each mnemonic in the header and the data values directly beneath it (as delimited by the commas). No holes or extraneous values are allowed in the data set. Each line of data must be complete. Each line of data should be separated with a newline or the combination of CR and LF characters. Since the data in a file is all time-coordinated, each data file usually represents the data from a single packet type or APID of spacecraft data.
There are no hard-coded restrictions on the size of input files, however, the system works most effectively if the each file are kept between 10 KB and 2 MB in size. The maximuml size limit is determined by the available free RAM on the server system.
File Naming Convention:It is required that each data file name end with an ".trd" extension. It is recommended that the file name before the extension have the following format: PacketIdentifier_Year_DayOfYear_OrbitID
Example file: pkt02_00-109-0437.trd