NAME:
	jitter_subs
PURPOSE:
	A suite of routines for MDI jitter mode analysis
HISTORY:
 V4.1	20-Jan-95 (MDM) - Various cosmetic changes
			- Broke subroutines into JITTER_SUBS.PRO
			- Allowed sub-menu list to be selected
 V4.2	20-Jan-95 (MDM) - More modifications and adjustments
			- Added MF_SAMPLE structure to the summary
			  structure
			- Backup up 32 samples at missing 1/16th samples
			  (when 239 instead of 240)
 V4.3	23-Jan-95 (MDM) - Made freq peak intensity plot a log plot
 V4.4	27-Jan-95 (MDM) - Made patch to handle incomplete dataset
			  during MK_SUMMARY/SORT_ISS
 V4.5	 2-Feb-95 (MDM) - Patched to handle a mixture of ISS_MODE
			  and image data in a single file.
 V5.0	 6-Feb-95 (MDM) - Modified to pass an assortment of information
			  by replacing "ss_blocks" with a structure
			- Pass and display the input file name
			- Allow background subtraction
 V5.1	 7-Feb-95 (MDM) - Allowed reading/writing summary files on
			  non-SGI machine (byte swapping)
 V5.11	 8-Feb-95 (MDM) - Modified to print bkg subraction info on
			  the PLOT_FFT output
			- Added menu option to change data directory
 V6.00	17-Feb-95 (MDM) - Added Tarbell code to integrate and calculate
			  overall jitter
			- Allowed block selection by clicking on image
			- Allowed masking of spectra by marking bad
			  frequencies
			- Allowed totaling of selected ranges
 V6.01	17-Feb-95 (MDM) - Small changes in plotting format (oplot 0 line)
			- When removing points, remove only the top 3
 V6.10	 1-Mar-95 (MDM) - Various changes and additions
 V6.20  6-Mar-95 (MDM) - Added capability to add title to the plots/displays
 V6.21  6-Mar-95 (MDM) - Allow using previous background for background
			  subtraction
 V6.22	 7-Mar-95 (MDM) - Modification to not count the same frequency twice
			  when integrating to get a total (when marking two
			  regions which overlap)
 V7.00	 6-Feb-96 (MDM) - Modified to work on the flight system
 V7.01	11-Feb-96 (MDM) - Modified to read the raw TFR files
 V7.02	22-Feb-96 (MDM) - Changed all plot reference to "Power" to "Amplitude"
			- Added new option to plot X error,y error amplitude
			- Modified the title creation to be shorter
 V7.03	26-Jun-96 (MDM) - Mod to allow resetting of regions to integrate
			- Added menu option to save spectra to file
 V7.04 27-Jun-96 (MDM) - Corrected derivation of summary saved spectra file name
			- Converted integrated total to arcsec RMS
 V7.05	 9-Jul-96 (MDM) - Corrected to save "summary" variable in summary file
 V7.06 16-Jul-96 (MDM) - Made xmenu_sel the default.  Use "qxwin=0" to use
			  wmenu_sel
			- Made /data14/jitter the default directory
 V7.07	10-Sep-96 (MDM) - Modification to the way that the raw telemetry file is
			  read to fix a new error state
 V7.08	11-Nov-96 (MDM) - Modified DISP_FFT option to mark integrated blocks
			  selected
	*** CHanged to work with TRACE ***
			- Didn't update the program version number or name
 V8.00	 9-Jan-97 (MDM) - Updated prog ver and name
			- Larger main menu listing
			- Allowed toggling from PZT_Avg to PZT_Err
			- New labels
			- Made integrated peak totals unitless (DN)
			- Changed summary generation to be B-C (1-2) instead of 2-1
 V8.01	13-Jan-97 (MDM) - Modified MK_SUMMARY to not work on files over 2 meg
 V8.02	24-Jan-97 (MDM) - Patch for case where there are 21 blocks in one sec
 V8.03	27-Jan-97 (MDM) - Fixed max freq plotting
			- Plot 3 PZT when plotting integ spec
 V8.04	28-Jan-97 (MDM) - Fix OPLOT of single point
			- Fixed displaying GT image when PZT error is selected
			- Don't plot phase over time, plot amp in linear scale
			- On peak finding, use median of first 5 points, not avg
			- Use "XYESNO" instead of "YESNOX"
 V8.05	 3-Apr-97 (MDM) - Allow B-C option during error plots
 V9.00	10-Feb-98 (MDM) - Modified to work with new TRACE reformatted datafiles
 V9.01	 7-Apr-98 (MDM) - Modified to use TRACE_J1_DIR (not TRACE_I1_DIR)
			- Fixed 8 hr correction which was needed for ground
			  testing (because of DEP)