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December 27, 2010
Space Weather Prediction Center (SWPC)
GOES X-Ray Data Lists
===========================================================================
**************************************************
******* Data List Naming Convention *******
**************************************************
The SWPC data list naming convention was changed in 2010 to support
GOES satellite designation changes. SWPC designates a Primary and
a Secondary GOES Satellite for each instrument.
http://www.swpc.noaa.gov/Data/goes.html
Filename includes a 'p' for the Primary and 's' for the Secondary
SWPC GOES satellite. The satellite number, i.e. GOES-15, is in the
Data List file header.
Naming Convention:
2-hour lists: Gp_xr_1m.txt and Gs_xr_1m.txt
Gp_xr_5m.txt and Gs_xr_5m.txt
Full day lists: 20091201_Gp_xr_1m.txt and 20091201_Gs_xr_1m.txt
20091201_Gp_xr_5m.txt and 20091201_Gs_xr_5m.txt
===========================================================================
This directory contains GOES X-ray Data Lists for 1- and 5-min data.
Currently there is only a Primary GOES XRS satellite.
The lists update every 1- and 5-minutes respectively.
The files with no date in the filename always contain data for the last
2-hours. Users retrieving data frequently are asked to use these files.
The daily files are named with the UT day of the data and the GOES
satellite, i.e G12 refers to GOES 12.
The file format follows a standard data list conventions where header
lines start with either # or :.
Date/times
Dates are shown as year month day (2006 02 06) and an SWPC
"Modified Julian Day (MJD). The SWPC MJD for Jan 1, 2004 is 53005
Time is shown as HourMin (1900) and seconds of the day (68400)
See http://www.swpc.noaa.gov/Data/goes.html the SWPC GOES
Satellite News web page
GOES data are archived at the National Geophysical Data Center
http://www.ngdc.noaa.gov/stp
******************************************************************
** Please read the SWPC Disclaimer at http://www.swpc.noaa.gov/ **
******************************************************************
SWPC provides near-real-time and recent data, solar and geomagnetic
indices and solar event reports created from preliminary reports.
Preliminary data may contain errors or be revised after further
review. The historical products in this SWPC Warehouse are the
preliminary reports as originally published. SWPC does not encourage
the use of preliminary data for research purposes.
Links to on-line data at SWPC and archive sites with final data:
http://www.swpc.noaa.gov/Data/
******************************************************************
Please send comments and questions to SWPC.Webmaster@noaa.gov
Report problems to SWPC.CustomerSupport@noaa.gov
==============================================================================
==============================================================================
==============================================================================
OLD NOTICES
=========================================================================
GOES 15 Designated Primary X-ray Satellite
October 28, 2010 -- GOES 15 replaced GOES 14 as the Primary SWPC GOES
X-ray Satellite. GOES 14 is being moved into storage. There is no
Secondary SWPC GOES X-ray satellite.
X-ray ascii data files use the file naming convention 'Gp' for GOES
Primary, this means only header lines changes.
=========================================================================
At 0000UT OCTOBER 28
GOES 15 Will Replace GOES 14 as Primary Satellite for XRS data
October 13, 2010: At 0000 UT October 28 GOES 15 will replace GOES 14
as the Primary SWPC GOES X-ray Satellite. GOES 14 is being moved into
storage. There is no Secondary SWPC GOES X-ray satellite.
Because the X-ray file naming convention uses 'Gp' for GOES Primary,
the only data file changes will be in header lines.
===========================================================================
GOES 10 Decommissioning Dec 1, 2009
GOES 14 Becomes Primary Satellite for XRS data
No Secondary Satellite for X-rays or Electrons and Protons
November 17, 2009: On Tuesday, 01 December, the GOES 10 satellite will
be officially decommissioned. At that time, GOES 14 will replace GOES 10
as the Primary SWPC GOES X-ray Satellite.
GOES 10 Data Lists End Dec 1, 2009
The SWPC GOES 10 Data Lists will end Dec 1. The older GOES 10 Data Lists
will rotate out of the directories over the next 90 days.
/lists/xray/G10xr_1m.txt and 'yearmoda'_G10xr_1m.txt
/lists/xray/G10xr_5m.txt and 'yearmoda'_G10xr_5m.txt
GOES 14 X-ray Data Lists will begin after 0000UT Dec 1, 2009.
Changes to the GOES XRS Data
The GOES 10 and GOES 14 XRS instruments have very different electronics and
therefore, there will be some qualitative changes in the appearance of the
data. The main difference will be the level of noise in the data at the
lowest values. When the background levels are low (less than 2E-8 W/m2 or
A2.0), the GOES 10 data looks flat and the steps are very abrupt. At these
low flux levels, the GOES 14 data will be quite noisy. As the x-ray flux
levels rise up above 2E-8, the noise will decrease and the plots will look
very similar to the GOES 10 data.
==========================================================================
GOES 10 X-ray Outages During Eclipse Season
Feb 21, 2008 -- GOES 10 X-ray outages due to spacecraft eclipse season
started Feb 20 and will continue for about 40 days (April 1). Maximum
eclipse duration will reach about 65 minutes peaking in the middle of the
interval (March 11). Currently, X-ray sensors (XRS) are not operational
on other GOES satellites to fill in for the GOES-10 eclipses. No GOES 10 X-ray and Proton Data
===========================================================================
GOES-10 X-ray Data Returns
GOES-11 Xray Data LOST
February 12, 2008 -- GOES-10 data has resumed and GOES-10 has been designed
the SWPC primary GOES Satellite for X-ray data.
GOES-11 Xray Data has become unavailable and is not expected to return.
GOES-11 Data Lists ended on Feb 10, 2008.
GOES-11 Data Lists have been discontinued.
===========================================================================
GOES-12 X-ray Lists End
November 27, 2007 -- the GOES-12 X-ray list has been discontinued because
the X-ray sensor is not operating.
==============================================================================
GOES Primary and Secondary Satellite Change
GOES 11 Primary, GOES 10 Secondary
April 13, 2007 -- Due to an anomaly on the GOES 12 X-ray Sensor (XRS) no
GOES 12 X-ray data has been available at SEC since April 12, 2250 UTC. SEC
has changed its Primary and Secondary X-ray satellite designations to GOES 11
Primary and GOES 10 Secondary.
There may be minor differences between GOES XRS sensors but the differences
should not affect products.
For now GOES X-ray data files will be created for all three GOES satellites,
GOES 11, GOES 10, and GOES 12 in case GOES 12 data is available again.
========================================================================
SEC Secondary GOES Spacecraft Change
At 1400UT, June 22, 2006 the SEC secondary GOES satellite for
magnetometer, X-ray, and electron measurements changed from
GOES 10 to GOES 11. GOES 12 remains the primary SEC GOES
satellite. For energetic proton measurements there was no change;
GOES 11 remains the primary SEC GOES satellite and GOES 10 the
secondary. SEC products that include magnetometer, X-ray, and
electron measurements from the secondary SEC GOES satellite
changes at that time.
GOES 11 data lists began June 22, 2006, and the GOES 10 x-ray lists
ended with June 21.
========================================================================
GOES 10 Energetic Proton Outages Expected
June 19, 2006 -- GOES 10, SEC's secondary GOES satellite for energetic
protons, will not be available at SEC for about two weeks beginning
on June 25th, because its telemetry frequency will be changed to avoid
conflicting with GOES 11 transmissions. There will be two additional
periods (approximately 10 - 14 days) when GOES 10 data will not be
available, as GOES 10 drifts past GOES 13 and GOES 12.
GOES 11, the primary SEC GOES satellite for Energetic Protons will be
available throughout the GOES 10 outages.
June 19,2003
To ensure continued operational monitoring of important energetic particle
data, it is necessary to reassign primary/secondary designations for the
GOES Space Environment Monitor (SEM) detectors. Beginning 1700 UTC on June
18, 2003 GOES 11 (113W) became the primary satellite for protons. GOES 12
(75W) continues as the primary satellite for magnetometer, X-ray, and
electron measurements. GOES 10 (135W) is the secondary satellite for all
SEM sensors - magnetometer, X-ray, and energetic particles. Because of the
degraded state of the proton data on GOES-10, its designation as the
secondary source for proton data is a short-term solution. More permanent
solutions have been identified and are being evaluated. Users will be
notified when we define and schedule a permanent fix.
======================================================================
May 15, 2003 -- The GOES 10 energetic proton detectors are showing
intermittent, high noise levels in the higher energy proton channels
(greater than about 80 MeV). This problem was first noticed in data
taken April 26, 2003. To ensure continued operational monitoring of
important energetic particle data, it is necessary to reassign
primary/secondary designations for the GOES Space Environment
Monitor (SEM) detectors. As of 1500 UT on May 15, GOES-8 became the
primary satellite for protons. GOES 12 is the primary satellite
for magnetometer, X-ray, and electron measurements. GOES 10 is
the secondary satellite for all SEM sensors - magnetometer, X-ray
sensor, and energetic particle sensor. This short-term solution
(approximately 2 - 3 months) will be in place until we define and
implement a permanent fix.
======================================================================
April 8, 2003 SEC stopped using GOES 8 data.
GOES 10 is now SEC's primary GOES satellite, with GOES 12 the backup
for magnetometer, XRS x-ray measurements, and energetic particle data.
However, no integral particle and electron flux values are available
on GOES 12.