Skip to main content

The HEASARC is running nominally. If you are trying to download a lot of data, please consider using the AWS cloud copy of most HEASARC data. As an alternative to locally installing HEASoft, SciServer is an online platform which has the software installed and data available when you login.

next up previous contents
Next: select event Up: select Previous: select   Contents

select chip

Selects events based on chip ID (Chandra and XMM specific).

Syntax: 

xsel> select chip <chipspec>

where chipspec is a string of chip specifiers either as single digit numbers (0–9) or as two character names (I0,I1,...). This command extracts events for the relevant chip(s) into a new file and appends the appropriate GTI. If only one chip is selected the GTI for the chip is copied, if not the relevant GTIs are merged. Chip specifiers should be separated by a space or a comma. This command also finds the minimum and maximum sky coordinates for the chip and sets the XYCENTER/XYSIZE appropriately.

Examples: 

xsel> select chip "s0 s1 s2 s3"