Calibration Notes: msr

NEAR MSI CCD #2 NOTES

The statistical analyses presented in this report were done using IDL, the .pro files that I wrote can be grabbed below, nothing fancy I can assure you...

Some IDL tools for working with the NEAR-MIS calibration data in FITS format.

If there are any bugs* (or improvements) please contact Mark Robinson - robinson@sirius.wr.usgs.gov

*not to be confused with features!

Data Viewing Tools:(way out of date, fix this up!!!)

1) nview4 - interactively display up to four images
	    at once along with their histograms from
	    a listing file - made like this:

			ls -1 *.FIT

	    of the files you want to view.

	    The first image is displayed starting in
	    the upper left, second image in upper right,
	    third image in lower left, fourth image 
	    in lower right.  Each image has a histogram
	    shown below as well as its mean and standard
	    deviation.  Typing a zero causes the next
	    image to display, typing any other number
	    causes the sequence to jump back (or forward)
	    to that image.  The displayed images have
	    been subsampled by a factor of two.

2) nview -  similar to nview4 but displays only one image
	    at a time at full resolution.


Data Analysis Tools:

1) nstat -  calculates average and std for each image in
	    a list file and prints this information to a
	    file named nstat.log (three column ascii file)

2) nsort

		
3) nearcube.pro - read in a series of single band images
	    to a cube for processing (template program**)

4) nratio.pro - ratio two bands of a cube.

5) nextract - pull off label info and write to file
	    nextract.log

6) lin_check - linearity check from a list of images

7) printlabels - print to screen label info for a list
	    of images.



OTHER REQUIRED FILES:  

from: usgs
----------
get_list.pro


from:  idlastro.gsfc.nasa.gov
	(stuff to read FITS format files)
------------------------------------------
ieee_to_host.pro
sxpar.pro
strnumber.pro
readfits.pro

Some Observed Glitches

I found that the following sequence is "funny"

		Mean DN
20580359	76
20580369	423
20580379	423
20580389	422
They all have indentical params except the 359 has a +15 cur of 76 vs 77 but I think this is not significant?