Skip banner and navigation tools.

 |  site map



Build Swift-XRT products.

Due to maintenance, this service will be unavailable briefly at some point between 10-12am UT on Monday March 19. To prevent jobs being lost any job submitted after 8am on that day will be held in the queue until maintenance is complete.

We have recently had issues with people submitting large numbers of jobs which have been overloading our storage capacity. Therefore we have had to temporarily reduce the time for which products are stored to 24 hours. This facility is not designed for bulk processing of large numbers of datasets. If you have a large project you wish to perform, please contact us on

Using this form you can build an XRT light curve, spectrum or enhanced position of any object observed by Swift. Full documentation for this process is given in the online documentation. If you enter your e-mail address on the form below, an e-mail will be sent to you when the processing is complete. Fields marked with a * are mandatory.

This interface is not intended for GRBs (which are processed automatically), so the default binning method is to use bins of constant duration.

This service is designed for point-sources only. Results for extended sources may be incorrect.

There are still open issues related to the analysis of Swift-XRT data. Please read the XRT digest pages before drawing conclusions from the products you generate here.

In some browsers the 'AdBlock' add-on causes this site not to work. Please disable AdBlock if you have problems.

Processing will be performed using HEASOFT v6.22.

Select products

To reduce the load on our servers, please select only the independent products you require.

Object details

Global options

Show advanced pile-up controls?

Light curve details

*Bin length (s):

*Hardness ratio bin length (s):

Use Bayesian when below:

Spectral details

*Use which observations?

*You can specify up to 4 time regions below:

Position details

*Use which observations?


Image details

*Use which observations?