Suzaku Archive: Getting started
General
The Suzaku archive is divided in two main directories science and trend data. The science
data are organized by observations, where an observation contains data from all instruments
and is identified by a 9 digit number.
The /obs directory contain the science data and it is subdivided in directories named
after the first digits of the sequence number under which the observations are located.
The trend area instead is divided in months interval named YYYY_NN, where YYYY is the year
and NN is the numeric value for the month. For each month the trend (or monitor) data are organized
by type for each of the instrument. The archive structure is therefore:
Archive access : Web, FTP and wget
At the HEASARC the Suzaku archive can be accessed using the web interfaces Browse or via anonymous FTP or via Wget.
- Access via Web : The archive access via the Web makes use of database tables to search for the science data. The currently available tables are :
- suzamaster records high-level information for each Suzaku observation.
- suzaxislog dedicated to the XIS to allow searches of the different instrument configurations
- Anonymous FTP : If the observation id (sequence number) is already known, the data can be retrieved via anonymous FTP. For example, if the user wants to retrieve the sequence '100001010' observed in August 2005, she/he can either download the files individually (see Example 1) or create and download a tar file containing the entire observation (see Example 2).
Example 1
ftp heasarc.gsfc.nasa.gov
(username: anonymous, password: your_e-mail_address)
%cd suzaku/data/obs/1/100001010
%binary
%[prompt]
%[m]get file_name[s]
%quit
Example 2
ftp heasarc.gsfc.nasa.gov
(username: anonymous, password: your_e-mail_address)
%cd suzaku/data/obs/1/
% prompt
% get 100001010.tar.gz
%quit
Example 1 wget -q -nH --cut-dirs=5 -r -l0 -c -N -np -R 'index*' -erobots=off --retr-symlinks http://heasarc.gsfc.nasa.gov/FTP/suzaku/data/obs/1/100001010/ Example 2 wget -q -nH --cut-dirs=5 -r -l0 -c -N -np -R 'index*' -erobots=off --retr-symlinks http://heasarc.gsfc.nasa.gov/FTP/suzaku/data/obs/1/100001010/xis/Similarly using the FTP protol the 'wget' command for the Example 1 is :
Example 1 wget --passive-ftp -q -nH --cut-dirs=5 -r -l0 -c -N -np --retr-symlinks ftp://heasarc.gsfc.nasa.gov/suzaku/data/obs/1/100001010/The combination of the 'wget' with the FTP protocol allows also to retrive data via a tar file. The commands for the Example 1 and 2 are:
Example 1
mycom> wget --passive-ftp -q ftp://heasarc.gsfc.nasa.gov/suzaku/data/obs/1/100001010.tar
Example 2
mycom> wget --passive-ftp -q ftp://heasarc.gsfc.nasa.gov/suzaku/data/obs/1/100001010/xis.tar
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