Contents

• List of Figures
• 1 General Yohkoh Software (Getting Started)
  • 1.1 Accessing the Yohkoh Data (YODAT)
    • 1.1.1 Most Common BCS Display Routines
    • 1.1.2 Most Common HXT Display Routines
    • 1.1.3 Most Common SXT Display Routines
    • 1.1.4 Most Common WBS Display Routines
    • 1.1.5 Advanced YODAT Options
  • 1.2 How to Access the Yohkoh Observing Logs and Event Logs
    • 1.2.1 Displaying a Light Curve Set of all Instruments (PLOTY)
    • 1.2.2 Performing Searches Using the Observing Log (XSEARCH_OBS)
    • 1.2.3 Listing of the SXT Images and Heliocentric Locations
    • 1.2.4 Light Curves from BCS, WBS and HXT
    • 1.2.5 Creating a List of Yohkoh Events (PR_EVN)
    • 1.2.6 Direct Reading of the Observing Log
  • 1.3 How to Perform Spectral Fitting
  • 1.4 How to Read Yohkoh Archive Tapes (GO_RDTAP)
  • 1.5 How to Read Yohkoh Database Tapes (RD_YDBTAP)
  • 1.6 Selection and Extraction of an Arbitrary Shaped Sub-Image (WDEFROI) [*]
  • 1.7 Browsing the Laser Movie at ISAS or LPARL
  • 1.8 How to Read Text Files with IDL (RD_TFILE)
• 2 Bragg Crystal Spectrometer (BCS)
  • 2.1 Entry Point Into the Data
    • 2.1.1 Accessing a Specific Time Interval Using YODAT
    • 2.1.2 Accessing a Specific Time Interval Using WBDA
    • 2.1.3 Browsing
  • 2.2 Examining Data in the BDA Files
    • 2.2.1 Listing the BDA Data
    • 2.2.2 Light Curve (only) Plot Routines
    • 2.2.3 Spectra and Light Curve Plot Routines
    • 2.2.4 Spectral (only) Plot Routines
    • 2.2.5 2-d Plots of Spectra Against Time
    • 2.2.6 Spectral Movie
    • 2.2.7 Overplotting Spectra
    • 2.2.8 Light Curves of Selected Bins
  • 2.3 Calibrating and Fitting Spectra (using the BSC software)
    • 2.3.1 Listing the BSC Data
    • 2.3.2 Fitting the BSC Data
    • 2.3.3 Temperature Fit (by Comparison)
    • 2.3.4 Extraction from the BSC structures
    • 2.3.5 Displaying the BSC Data
  • 2.4 Calibrating and Fitting Spectra (using the BSD software)
    • 2.4.1 Displaying Data from the BSD File
    • 2.4.2 Displaying Intermediate Results (from BSDCAL)
    • 2.4.3 Displaying Fitted Spectral Data (from BSDFIT)
    • 2.4.4 Displaying Processed Parameters (from BSDFIT)
  • 2.5 Other Useful BCS Routines
• 3 Hard X-Ray Telescope (HXT)
  • 3.1 Preparations
  • 3.2 Time profiles
    • 3.2.1 How to Plot Light Curves of HXT Data
    • 3.2.2 Displaying or printing time profiles
    • 3.2.3 Obtaining count rate data
  • 3.3 Synthesizing Images from HXT Data
    • 3.3.1 Determining the Flare Location on the Sun (HXT Address)
    • 3.3.2 Quicklook of Synthesized Image (HXT_QLOOK)
    • 3.3.3 HXTPRO (Sakao)
    • 3.3.4 HXT_ IMG (McTiernan) [*]
    • 3.3.5 AUTO_HXI [*]
  • 3.4 Using HXT for Broad-Band Hard X-Ray Spectrophotometry
    • 3.4.1 Determining Temperatures
  • 3.5 How to Fit HXT Spectra: HXTBOX_FSP (McTiernan) [*]
  • 3.6 Spectral analysis with HXT (Sakao)
    • 3.6.1 Background selection
    • 3.6.2 Power Law Spectrum
    • 3.6.3 Thermal spectrum
  • 3.7 Useful Routines for HXT
• 4 Soft X-Ray Telescope (SXT)
  • 4.1 How to View SXT Images
  • 4.2 Preparing the SXT Data for Analysis (SXT_PREP)
  • 4.3 Making a Light Curve with SXT Images (LCUR_IMAGE)
  • 4.4 Making a Mission Long SXT Light Curve
  • 4.5 Jitter and Assembly of PFIs from Multiple Exposures
  • 4.6 Displaying SXT and Ground-Based Synoptic Maps
  • 4.7 Alignment of Optical and X-Ray Images
  • 4.8 Aligning Ground-Based Images with SXT
    • 4.8.1 Determining the Coordinates Using FIT_LIMB
    • 4.8.2 Determining the Coordinates Using DSK_LOCB
    • 4.8.3 Determining the Coordinates and/or Roll by Feature Correlation
    • 4.8.4 Registering One Image to Another Image
  • 4.9 How to Correct for Vignetting
  • 4.10 Determining the Pointing Coordinates for SXT PFI
    • 4.10.1 Simple Plots of Location Relative to the Solar Limb
    • 4.10.2 Overlaying the PFI Location on an Image (PFI_LOC)
    • 4.10.3 Listing of the Images and Heliocentric Locations
    • 4.10.4 Extracting the PFI Location (GT_CENTER)
  • 4.11 Filter Responses
  • 4.12 Determining Temperatures for SXT Images (SXT_TEEM)
    • 4.12.1 Read in the data
    • 4.12.2 Prepare the data: Part 1 (background subtraction, registration)
    • 4.12.3 Prepare the data: Part 2 (Filter selection)
    • 4.12.4 Prepare the data: Part 3 (Interpolation)
    • 4.12.5 Compute SXT temperatures
    • 4.12.6 Additional Hints and Notes
  • 4.13 Looking at Time-Profiles of Temperatures (GO_TEEM)
  • 4.14 How to Fit SXT Spectra (McTiernan) [*]
  • 4.15 Useful Routines for SXT
• 5 Wide Band Spectrometer (WBS)
  • 5.1 How to Plot Light Curves of WBS Data
    • 5.1.1 Plotting Seven WBS Sub-Instruments on One Page
    • 5.1.2 Light Curves of SXS and HXS-PC
    • 5.1.3 Light Curves of SXS-PC
    • 5.1.4 Light Curve of HXS-PC
    • 5.1.5 Light Curve of Ratio of HXS-PC2 to HXS-PC1
    • 5.1.6 Light Curve of HXS-PH
    • 5.1.7 Light Curve of Ratio of HXS-PHi-j to HXS-PHk-l
    • 5.1.8 Light Curve of GRS-PCL
    • 5.1.9 Light Curve of GRS-PCH
    • 5.1.10 Light Curve of Ratio of GRS-PCi to GRS-PCj
    • 5.1.11 Light Curve of GRS-PHL and GRS-PHH
    • 5.1.12 Light Curve of Ratio of GRS-PHLi-j to GRS-PHLk-l
    • 5.1.13 Light Curve of RBM-SC-PC and RBM-SD
  • 5.2 How to Display WBS Spectra
    • 5.2.1 Displaying the Spectra in Image Form
    • 5.2.2 HXS Spectral Display (single power law fitting)
    • 5.2.3 HXS Spectral Display (double power law fitting)
    • 5.2.4 GRS Spectral Display
  • 5.3 How to Fit WBS Spectra
    • 5.3.1 HXS_FSP (McTiernan)
    • 5.3.2 FSP_PROC (McTiernan)
    • 5.3.3 SPFD HXS
    • 5.3.4 SPFD GRS
  • 5.4 Useful Routines for WBS
• 6 Accessing Data from Ground-Based and Other Satellites (GBO)
  • 6.1 Accessing Ground-Based FITS Images
    • 6.1.1 Directory and File Organization
  • 6.2 How to Look at BATSE Data
  • 6.3 How to Look at GOES Data
  • 6.4 Determining Temperatures from GOES
  • 6.5 Accessing Nobeyama Radio Data
• A Using the Yohkoh Team Bulletin Board (TBB)
  • A.1 Overview
  • A.2 Access to the TBB
  • A.3 How to submit a new proposal
  • A.4 How to Update a Proposal
  • A.5 Where to Find TeamBB Files
• B Using the Yohkoh Package from a Remote Node
  • B.1 Logging in from a remote node
  • B.2 Redirecting X-Window Outputs
    • B.2.1 Defining X-Window Output Node
    • B.2.2 Modifying Security to Accept Remote X-Windows
• C Basics for Using FTP
• D Tables of Useful Yohkoh Routines
  • D.1 General Useful Routines
  • D.2 BCS Useful Routines
  • D.3 HXT Useful Routines
  • D.4 SXT Useful Routines
  • D.5 WBS Useful Routines
• About this document ...