<? echo "MIPS-$caid, Campaign $campn IOC/SV Analysis"; ?>

There is a problem w/ your write-up. Check that you have valied entries for \$CAID and \$Campn in your analysis.php file. If that checks out, then Contact Stansberry"; return ; } // get first matching task $row = mysql_fetch_array($result); $title = $row["title"]; $princ = $row["principal"]; $deputy= $row["deputy"]; $campn0 = $row["campn0"]; $aorkeys = $row["aorkeys"]; // get real name of principal, deputies $princ = ioc_get_person($princ); $princ = $princ[0]; $deps = explode(",",$deputy); foreach ($deps as $depty) { $depty = trim($depty); $depty = ioc_get_person($depty); $depty = $depty[0]; $depty = explode(",",$depty); $depty = $depty[0]; // last names only $deplist[] = $depty; } $deplist = implode(", ", $deplist); $caid = sprintf("%03d",$caid); $file = "mips-".$caid.$campn.".analysis.php"; // if more matches, append the AORKEYS from those $numrows = mysql_num_rows($result); if ($numrows > 1) { $aorkeys = " " . $numrows . " Task Executions: ". $aorkeys; for ($i=0;$i < mysql_num_rows($result); $i++) { $row = mysql_fetch_array($result); $morekeys = $row["aorkeys"]; $aorkeys = $aorkeys .'; '.$morekeys; } } // END PHP. ?> <? echo "MIPS-$caid, Campaign $campn IOC/SV Analysis"; ?>

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Task Outcome Summary

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Abstract

We have constructed the 70micron IC obtained in SCAN mode. The standard deviation of the 70micron IC over the entire array is approximately 43%, but this statistics includes the illumination pattern of the 70micron array.

Analysis

We have observed 1 degree (1 leg) in fast mode for three regions of the sky (zodi14a, zodi14b, zodi29a), with a total of 166 times 3 (regions) DCEs. The final IC combines 465DCEs.

Since these tasks are repeated a number of times during IOC, we will observe different regions of the sky each time. The tasks will check for possible variations of quality of IC or saturation. This task will also be useful for screening regions of the sky to obtain ICs in SIRTF routine operations.

The reduction was performed with the DAT programs. We used mips_sloper with sensitive cosmic ray detection (-q option) turning off the electronic non-linearity correction, mips_caler (using the me_70_darka_CamR_20nov2003.fits) and mips_enhancer with the following options:

verbose = 0
scale = 1.
filename = ic70_scan
prefix = ic_scan70
nXTile = 1
nYTile = 1
dark = 0
flat = 0
illumination_correction = 1
NormalizeInput = 1
SigmaCut = 3.0
SigmaTolerance = 0.25
MaxIterations = 10
StackSTDEV = 0
OutlierMinPoints = 3
QuartileFactor = 10
OverlapTolerance = 0.5
diagonistics = 1
WriteGeometry = 0
WriteOutlier = 0
WriteTiles = 0
FluxMean = 0
FluxMedian = 1
OverWrite = 1
distortion = 0
UseBoostFrame = 1
reject = 1
NormalizeSideA = 1

Note that we rejected the first DCE after the stim flash (reject = 1 option) and normalized the input images (NormalizeInput = 1 option) using Side-A only (NormalizeSideA = 1).

The three regions of the sky observed were:

zodi_14a (RA=08:55:25.1305 and Dec=+12:09:32.6938, J2000) with a predicted brightness at 70microns of 14.5 MJy/sr.
zodi_14b (RA=09:32:18.5321 and Dec=+19:52:22.7257, J2000) with a predicted brightness at 70microns of 15.3 MJy/sr.
zodi_29a (RA=21:49:42.1042 and Dec=-07:49:51.7263, J2000) with a predicted brightness at 70microns of 14.3 MJy/sr.

The predicted values of the 70micron brightness are from SPOT for the date of the observing (Nov 17, 2003).

Results

The SCAN mode 70micron IC constructed using 465DCEs observed in Campaign R is shown in Figure1, jointly with the ICs built for each observed region. Statistics on the images provides the following:

SCAN three reg (465DCEs): mean= 0.70310; median= 0.80183; sdtdev= 0.42375; skew=-0.68151;
SCAN reg zodi14a (155DCEs): mean= 0.68344; median= 0.79317; sdtdev= 0.44940; skew=-0.74581;
SCAN reg zodi14b (155DCEs): mean= 0.72484; median= 0.79167; sdtdev= 0.40623; skew=-0.67644;
SCAN reg zodi29a (155DCEs): mean= 0.74905; median= 0.85033; sdtdev= 0.42272; skew=-1.00618;

The histograms are shown in Figure2.

Figure1. Comparison of 70micron Illumination Corrections obtained in SCAN mode for the three regions observed in Campaign R (up-left), zodi14a (up-right), zodi14b (bottom-left) and zodi29a (bottom-right). Both are displayed from z1=0. to z2=2.

Figure2. Histograms of the 70micron Illumination Corrections observed in Campaign R obtained in SCAN mode.

A better way to assess the quality of the observed ICs is to remove the illumination pattern of the 70micron array. To do so, we ratioed different 70micron ICs. The statistics (mean, std, median, mode, skewness, min, max) on the images provides the following:

ratio zodi14a(155DCEs)/zodi14b(155DCEs): 1.22    2.881    1.004    1.014    19.13    0.01609    70.58
Side A alone: 1.011    0.07015    1.012    1.019    -0.3799   0.7275    1.218
Side B alone: 1.444    4.139   0.9617   0.9566    13.22    0.01609    70.58

ratio zodi14a(155DCEs)/zodi29a(155DCEs): 1.02    1.07   0.9358   0.9412    13.27    0.02984    20.11
Side A alone: 0.9815    0.09913   0.9547   0.9402    1.133   0.7785    1.373
Side B alone: 1.06    1.525   0.8288   0.7729    9.274    0.02984    20.11

ratio zodi14b(155DCEs)/zodi29a(155DCEs): 1.045   0.9553   0.9416   0.9197    12.72 0.03852    19.85
Side A alone: 0.9755   0.1175   0.9452   0.9051    1.095   0.7729    1.517
Side B alone: 1.118    1.356   0.9066    1.007    8.914    0.03852    19.85

Some examples of the ratios of 70micron are shown in Figure3.

Figure3. Examples of ratios of 70micron Illumination Corrections: up-left: zodi14a to zodi14b, up-rigth: zodi14a to zodi29a, bottom-left: zodi14b to zodi29a. All images are shown with z1=0.5 and z2=1.5

Conclusions

We have constructed 70micron IC SCAN mode using three regions of the sky (zodi_14a, zodi14b, and zodi_29a). The standard deviations of the 70micron ICs over the entire array are approximately 40%, but this statistics includes the illumination pattern of the 70micron array. If we remove the illumination pattern by ratioing two ICs, we find that the rms is approximately 7%-11%.

Output and Deliverable Products