This page contains a list of known issues in the current version of the XMM-Newton Science Archive (XSA). This list is continuously updated. The XSA users are therefore invited to check it before reporting any problems to the
XMM-Newton HelpDesk.
- The archive PPS products containing RGS response matrices corresponding to
wide field spectrum extraction are invalid for PPS versions older than
07000001_2009030.144400 of March 2009. Their nomenclature is
P<obsid>R[1][2]S<expid>WREMAT<ords>.FIT. Users who want
to use wide field spectra processed before that date have to re-process the data.
- The Interactive Image Analysis pop-up window (SPDT) does not open properly for certain
RGS spectra, which blow up the virtual machine of the browser. This is a problem of
the small memory allocated for the XSA applet.
A Webstartable version of the XSA has been provided, where the memory for the Java
Virtual Machine can be set without problem. The browser plugin memory, instead, can
not be changed from the application. People using the applet should increase the
browser memory handling tuning jvm on their machine. For example, to change JVM
settings in Windows:
To change the amount of memory for JVM on a Windows operating system:
a. Open the Control Panel (Click Start->Settings->Control Panel ).
b. Double-click on the IBM Java Plug-in or Java Plug-in icon.
c. On the Java Plug-in Control Panel dialog box, click the Advanced tab.
d. In the Java Runtime Parameters field, type -Xmsnm, where n is the memory
size. For example, to specify 20MB of memory, type -Xms20m.
e. Click Apply.
f. Close the Java Plug-in Control Panel dialog box.
- If you are using the Netscape 4.x family of browsers you may experience memory
problems when the number of sources matching your query is very large (more than
15000). As a possible workaround, we suggest you to download and install a Java
plug-in for your browser. Information on this subject is available at the
Java plug-in web site.
Alternatively, you may consider downloading the data through one of the options
listed in our Access Pages.
Send your questions about the XSA Data Archive to the:
XMM-Newton HelpDesk
