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Atanu Koley </td>
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• Atanu Koley<br>
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Awaiting Agent
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Unsupported OS
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I am using AIPS DEC 2020. Previously I was using AIPS DEC 2017. In both versions problems are same. Problem 1: I have used the BDF2AIPS task or fitld task to load the data in AIPS . I r...
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<div>I am using AIPS DEC 2020. Previously I was using AIPS DEC 2017. In both versions problems are same.</div><div><br></div><div> Problem 1: <br></div><div>I have used the <b>BDF2AIPS </b>task or <b>fitld</b> task to load the data in AIPS . I run the <b>listr</b> task with opty <b>'scan' and </b>I notice that the value in the Velocity (Km/sec) is correct (in my case 5.200 km/sec). <br></div><div>But after doing the flagging , calibration and splitting the target source, I have seen that in the<b> listr</b> task (with o<b>pty 'scan'</b>) the Velocity is showing 5200 Km/sec.</div><div>After proper doing the <b>cvel</b> task (aparm(1) 5200) the problem is same in the<b> listr </b>task (<b>opty 'scan'</b>).<br></div><div><br></div><div>My question is that, is it just an internal error of<b> listr</b> task? Below, I have attached a pdf, where I have shown the output of <b>listr </b>task (<b>opty 'scan'</b>)<br></div><div><br></div><div><br></div><div>Problem 2:</div><div><br></div><div>I want to combine twelve days data. For that I have run the <b>cvel</b> task for individual data set. <br></div><div>Now when I add the datasets with <b>DBCON</b>, each time I have kept the data set in different sub array (<b>doarray -1</b>), used <b>fqtol</b> 200000 (greater than BW) and <b>fqcent</b> 2. But in two cases, I have seen that even if the AN tables are added properly( means number increases properly) sub array number is showing same. <br></div><div><br></div><div>Below I have attached a pdf where the output of<b> DBCON</b> is written.</div><div><br></div><div>For example, I have a dbcon data, where there are five sub arrays (1-5), five AN tables. Now, I am adding next single day data with the DBCON data. In the<b> getn</b>, I have kept the DBCON data and in the <b>get2n</b>, single day data. <br></div><div>When I see the resultant dbcon data in the<b> listr</b> task (with <b>opty 'scan'</b>), I see the AN tables are now six. But , subarray number is still five. Single day data add in the same sub array( sub array no.5).</div><div><br></div><div> When I again run the DBCON task with the resultant DBCON dataset with the next single day data. Now, I have seen (<b>with listr and opty 'scan'</b>) that AN table is seven and the sub array number is also seven. There is no, sub array no six (6). After sub array number five(5) there is sub array number seven(7). <br></div><div><br></div><div>Problem is solved when I interchange the<b> getn</b> and <b>get2n</b> , means in the problematic two cases, if I have put the DBCON data in the <b>get2n</b> and single day data in <b>getn.</b> <br></div><div><br></div><div>So, my question is that is it just an internal problem of <b>listr</b> task or anything else?</div><div>Because after subarray number five it is showing subarray number seven. And also AN table is increase gradually. <br></div><div><br></div><div><br></div><div><br></div>
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