Re: A question on RXTE data

On Jun 15, 2007, at 3:33 AM, qianlei wrote:

> If I want to process RXTE data with ISIS, what shall I do to load the
> arf and rmf file since RXTE data only have a rsp file?

What Dave said.  Also, if you grab my .isisrc files from:

     http://space.mit.edu.ezproxyberklee.flo.org/home/mnowak/isis_vs_xspec/download.html

They have two functions in them:  load_all() and load_hexte() (code 
attached below) that I use for PCA data and HEXTE data, respectively.  
You don't *need* these functions, since they just wrap existing ISIS 
functionality.  But they cut out a few steps.  They make sure the 
backgrounds get loaded, and that the HEXTE exposure is assigned to the 
HEXTE arf (since one usually uses canned arfs for HEXTE).  If you've 
built the PCA pha files in the standard ways, the PCA pha file should 
have the response file listed in the header, and load_data (embedded in 
load_all and load_hexte below), should automatically load the PCA 
response.  (If it's not in the header, use load_rmf, like Dave 
mentioned.)  Likewise, if you built HEXTE data in the standard way, the 
response names should be in the headers.  Otherwise use load_rmf and 
load_arf.

Also, note that standard ISIS plotting usually doesn't do background 
subtraction in the plots (certainly does it in the fits, however  - 
standard ISIS data plots show model+background, and counts with the 
background counts included).  That's not very noticeable for most 
Chandra data.  But, you will notice it for PCA and HEXTE data.  I also 
have plotting routines in those scripts that you might find useful for 
RXTE data.

-Mike


public define load_hexte(a)
{
    variable b = load_data(a);
    variable c = get_data_exposure(b);
    variable a_id = get_data_info(b).arfs;
    if(a_id[0] !=0 and a_id[0] != NULL)
    {
       set_arf_exposure(a_id,c);
    }
    variable d = fits_read_key(a,"backfile");
    () = define_bgd(b,d);
    return b;
}

public define load_all(a)
{
    variable b = load_data(a);
    variable d = fits_read_key(a,"backfile");
    () = define_bgd(b,d);
    return b;
}

----
You received this message because you are
subscribed to the isis-users list.
To unsubscribe, send a message to
isis-users-request_at_email.domain.hiddenwith the first line of the message as:
unsubscribe