[vsnet-grb 9700] Changes to GCN/Swift-XRT/-UVOT Notices format
Bacodine
vxw at capella.gsfc.nasa.gov
Sun Oct 30 07:15:08 JST 2005
TO: All GCN email sites
RE: Two Changes in the format of some of the Swift Notices
DT: 29 Oct 05
INTRO:
This documents two changes to the GCN/Swift XRT & UVOT Notices: (a) the DATE & TIME
labels, and (b) the addition of the time-since-trigger field.
(a) The original implementation of these DATE & TIME labels was not quite right.
I got the "GRB" prefixes incorporated in some of the NFI Notices, when, in fact,
they are not strictly GRB-ish, but rather afterglow/image-related.
(b) The delta time since trigger is being added as a convenience.
These effect only the full email format notices; nothing is changing
in the 4 pager/cell formats, nor the socket packet contents.
WHICH NOTICES ARE CHANGING LABELS:
There are 6 Notice types that have the label changes. See the table below.
TABLE OF CHANGES:
NOTICE TYPE LABEL DELTA_T
========================== ===== =======
XRT Position Y Y
XRT Pos Nack Y Y
XRT Image [Processed] Y
XRT Spectrum [Processed] Y
XRT Lightcurve [Processed] Y
UVOT Source List [Processed] Y Y
UVOT Image [Processed] Y Y
UVOT Position Y
WHICH LABELS ARE CHANGING:
Below are pairs of extractions from the Notices in question. For clarity,
only the NOTICE_TYPE and the *_DATE/*_TIME lines are listed for clarity
(I didn't list the whole notice because that would clutter things).
Each pair is separated by a "//////////" divider. The current way
is listed first, then comes the new way (separated by a "========" divider).
The basic change is that the "GRB_" prefix is changed to "IMG_START_"
(or "SPEC_START_" or "LC_START_", as appropriate).
ADDITION TO THE 'TIME' LINE:
In addition to the label changes, there is also an addition to each
of the IMG_START_TIME lines. Appended onto each line is the field:
"NN.N [sec] since BAT Trigger Time". (This field is just the difference
between the respective start-of-image-accumulation time and
the BAT Trigger Time.)
All the XRT and UVOT notice types are getting this change. See the table above.
SCHEDULE FOR IMPLEMENTATION:
a) The label changes will start 03 Nov 05.
b) The delta-time fields have already been added as of 26 Oct 05.
APOLOGIES:
I apologize for those of you who have written scripts to parse these incoming
email notices. These changes (particularly the label changes) will cause you
some extra work. However, I feel that the current set of "GRB_"-based labels
is too confusing to people, and the long-term benifits will outweigh
the short-term efforts of a few.
Sincerely,
Scott
Scott Barthelmy NASA-GSFC, Code 661, Greenbelt, MD 20771
PHONE: 301-286-3106 (office)
FAX: 301-286-1684 (1st choice, -1682 2nd choice)
EMAIL: scott at lheamail.gsfc.nasa.gov
PAGER: 3013463733 at mmode.com
WEB: http://gcn.gsfc.nasa.gov/gcn
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-XRT Position
GRB_DATE: 13414 TJD; 44 DOY; 05/02/13
GRB_TIME: 79992.27 SOD {22:13:12.27} UT [Start of CCD integration]
======================================================================================
NOTICE_TYPE: Swift-XRT Position
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79992.27 SOD {22:13:12.27} UT, 91.8 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-XRT Nack-Position
GRB_DATE: 13414 TJD; 44 DOY; 05/02/13
GRB_TIME: 79992.27 SOD {22:13:12.27} UT [Start of CCD integration]
======================================================================================
NOTICE_TYPE: Swift-XRT Nack-Position
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79992.27 SOD {22:13:12.27} UT, 91.8 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-XRT Image
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79992.27 SOD {22:13:12.27} UT
======================================================================================
NOTICE_TYPE: Swift-XRT Image
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79992.27 SOD {22:13:12.27} UT, 91.8 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-XRT Processed Image
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79992.27 SOD {22:13:12.27} UT
======================================================================================
NOTICE_TYPE: Swift-XRT Processed Image
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79992.27 SOD {22:13:12.27} UT, 91.8 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-XRT Spectrum
SPEC_START_DATE: 13414 TJD; 44 DOY; 05/02/13
SPEC_START_TIME: 80005.60 SOD {22:13:25.60} UT
======================================================================================
NOTICE_TYPE: Swift-XRT Spectrum
SPEC_START_DATE: 13414 TJD; 44 DOY; 05/02/13
SPEC_START_TIME: 80005.60 SOD {22:13:25.60} UT, 105.1 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-XRT Processed Spectrum
SPEC_START_DATE: 13414 TJD; 44 DOY; 05/02/13
SPEC_START_TIME: 80013.60 SOD {22:13:33.60} UT
======================================================================================
NOTICE_TYPE: Swift-XRT Processed Spectrum
SPEC_START_DATE: 13414 TJD; 44 DOY; 05/02/13
SPEC_START_TIME: 80013.60 SOD {22:13:33.60} UT, 113.1 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-XRT Processed Spectrum
SPEC_START_DATE: 13414 TJD; 44 DOY; 05/02/13
SPEC_START_TIME: 80013.60 SOD {22:13:33.60} UT
======================================================================================
NOTICE_TYPE: Swift-XRT Processed Spectrum
SPEC_START_DATE: 13414 TJD; 44 DOY; 05/02/13
SPEC_START_TIME: 80013.60 SOD {22:13:33.60} UT, 113.1 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-XRT Lightcurve
LC_START_DATE: 13414 TJD; 44 DOY; 05/02/13
LC_START_TIME: 79997.61 SOD {22:13:17.61} UT
======================================================================================
NOTICE_TYPE: Swift-XRT Lightcurve
LC_START_DATE: 13414 TJD; 44 DOY; 05/02/13
LC_START_TIME: 79997.61 SOD {22:13:17.61} UT, 97.1 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-UVOT Source List
GRB_DATE: 13414 TJD; 44 DOY; 05/02/13
GRB_TIME: 79998.98 SOD {22:13:18.98} UT
======================================================================================
NOTICE_TYPE: Swift-UVOT Source List
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79998.98 SOD {22:13:18.98} UT, 98.5 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-UVOT Processed Source List
GRB_DATE: 13414 TJD; 44 DOY; 05/02/13
GRB_TIME: 79998.98 SOD {22:13:18.98} UT
======================================================================================
NOTICE_TYPE: Swift-UVOT Processed Source List
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79998.98 SOD {22:13:18.98} UT, 98.5 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-UVOT Image
GRB_DATE: 13414 TJD; 44 DOY; 05/02/13
GRB_TIME: 79998.98 SOD {22:13:18.98} UT
======================================================================================
NOTICE_TYPE: Swift-UVOT Image
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79998.98 SOD {22:13:18.98} UT, 98.5 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-UVOT Processed Image
GRB_DATE: 13414 TJD; 44 DOY; 05/02/13
GRB_TIME: 79998.98 SOD {22:13:18.98} UT
======================================================================================
NOTICE_TYPE: Swift-UVOT Processed Image
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79998.98 SOD {22:13:18.98} UT, 98.5 [sec] since BAT Trigger Time
//////////////////////////////////////////////////////////////////////////////////////
NOTICE_TYPE: Swift-UVOT Position
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79998.98 SOD {22:13:18.98} UT
======================================================================================
NOTICE_TYPE: Swift-UVOT Position
IMG_START_DATE: 13414 TJD; 44 DOY; 05/02/13
IMG_START_TIME: 79998.98 SOD {22:13:18.98} UT, 98.5 [sec] since BAT Trigger Time
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