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XMM-Newton Science Analysis System Page: 1
cxctods9
July 8, 2007
Abstract
Conversion of CXC region le to Ds9 format
1 Instruments/Modes
not applicable
2 Use
pipeline processing no
interactive analysis yes
3 Description
cxctods9 converts a given CXC [1] le to Ds9 format which can then be used to mark regions on a
displayed image in Ds9. The type of coordinates in the CXC table are characterized with the parameter
regtype. The Ds9 regions are written to standard output. Example:
cxctods9 table=reg.cxc >reg.ds9
4 Parameters
This section documents the parameters recognized by this task (if any).
Parameter Mand Type Default Constraints
table yes table name of existing table
in existing dataset
The name of the CXC table from which to read.
regtype no string image imagejlinearjfk5
The type of coordinate system the coordinates of the regions' reference points are to be associated with.
xmmsas 20070708 1801-7.1.0

XMM-Newton Science Analysis System Page: 2
5 Errors
This section documents warnings and errors generated by this task (if any). Note that warnings and
errors can also be generated in the SAS infrastructure libraries, in which case they would not be docu-
mented here. Refer to the index of all errors and warnings available in the HTML version of the SAS
documentation.
UnknownRegionTableType (error)
The specied table is not a CXC region table.
ColumnNotFound/UnknownCoordinateAxes (error)
There is an inconsistency in the region table: The value of the MFORM attribute is syntactically
incoorect or points to a non-existing column.
MandatoryColumnsMissing/MissingData (error)
Specied table is not CXC-compliant.
UnknownShape (error)
An unknown region shape was encountered.
In addition dal errors can occur in conjunction with the reading of the data set (e.g. access problems).
References
[1] J. McDowell and A. Rots. FITS REGION Binary Table Design. Technical Re-
port ASC-FITS-REGION-1.0, Chandra Science Center, March 1998. Found at the URL:
http://hea-www.harvard.edu/jcm/asc/docs/asc/region.ps.
xmmsas 20070708 1801-7.1.0