

    SDAST Chat Meeting #75: Thursday 27th March 2003
    
Participants: Silvia Martinez-Nunez, Jerome Chenevez, Carol Anne Oxborrow,
	Niels Jrgen Westergaard, Peter Kretschmar, Stefan Larsson, 
	Sami Maisala
	
Subjects Discussed: New Keywords in SPAG-MOD
		Dead time rate correction
		IMOD, it's different versions, and where to get them
		Background handling: empty fields
			using new j_cor_gain
			strange spectral results
		Instrument configuration and onboard patches
		Source extraction: flux problems for weak sources
		Crab count rates
		SDAST meeting in Valencia
		Science verification report
		Charity work
		Minutes of JEM-X Consortium meeting


**** Logging Started : Thu Mar 27 12:43:32 MET 2003


** silvia (~silvia@uhuru.dsri.dk) has joined channel #jemxadr
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<silvia> Good afternoon Carol Anne ! How are you ? END
*** njw (~njw@uhuru.dsri.dk) has joined channel #jemxadr
> Hi Silvia, Jerome and NJW! I hope the weather's good in Valencia, Silvia. END
<njw> Hello, how are you ? END
<jerome> Hi Silvia! Hej Niels Jrgen!
<jerome> END
> I'm pretty much the same as I was when you saw me this morning NJW - how about
<njw> Silvia, thanks for the hint on SPE selection. It worked! END
> you? END
<silvia> Hej all ! 
<njw> Fine, thanks END
<silvia> You are welcome, NKW ! END
<silvia> NKW = Niels Joergen ! END 
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<larsson> Hi there! END
> Just for the record, I AM logging this meeting for posterity - I forgot last
> week, being so busy delivering j_cor_gain at  the same time. Hi Stefan!
<larsson> Hi CA.
> Does anyone know if Peter got back to ISDC after his trip? END
*** smaisala (~smaisala@gemini.astro.helsinki.fi) has joined channel #jemxadr
<silvia> NO Where is Peter ? I have not recevived any email from him this week ! END
<larsson> Dont know, but I have not got any emails from him so probably not..... END
<njw> No, I've heard rumours that he was expected at ISDC today, but I haven't
<njw> got any mail from him END
<jerome> Yeah, That is quite unusal! END
> yes, he's been suspiciously (not to say, delightfully) quiet this week...END
> Hi Sami!
> But for Peter the gang's all here - shall we assume he's not joining us
> today? END
<njw> Y
<jerome> I propose we start with pt. 5 in the agenda... :-) END
<silvia> I am calling Peter ! His ofice phone is busy ! I will try in a few minutes again ! END
<silvia> Funny point Carol Anne ! END
<njw> Probably because I've just tried to call Peter, Silvia END
> Point 5 could be cleared up while we wait for PK: so you all read that far
<silvia> Yes, that's why ! END
<silvia> Peter is not in his office ! END
> in my email? I've just sent you all an email with the latest agenda for
> the meeting in valencia: it's got one addition, on the morning of the second
> day NJW thinks we should all discuss a configuration status file/document and
> what parameters should be included in it (and I agree with him). END
> Since Peter's obviously otherwise engaged, let's start with point one:
> ISSW status.
> I'll kick off: I've delivered j_cor_gain with all the spatial gain working
> properly. Unfortunately, you absolutely have to have a recent version of SPAG-MOD
> with all the new keywords to get this to work. The initial results look good.
> I've also delivered the new j_dead_time_calc with the RATE_COR that doesn't
> include grey filter effects. DEAD_EFF still covers all the effects of read-in
> dead time, grey filter loss and buffer loss. For anyone wanting to do a
> complete flux or countrate correction in one step, multiply your source flux
> (or whatever) by 1/(1-DEAD_EFF) for the relevant time, and you'll have
<smaisala> One question: What are the all keywords to use new j_cor_gain and where I can found the latest SPAG-MOD? 
> corrected for all three effects in one, without ever having to look at
> INST-STA.
> The new keywords tell the program what the ADC-channel position of the Xe
> fluoresence line was at a particular time and what the corresponding
> calibration spectra peak positions were. There are also four new keywords
<njw> To Sami: jmxi_imod_grp_0024.fits thru jmxi_imod_grp_0028.fits have these
> indicating which anodes should be used to make an average time correction to
<njw> new keywords, ISDC ic-tree 4.37 END
> the gain before multiplying with the SPAG factor. You'll hear more about this
> at the meeting. END
<njw> If you need a private copy you can get one from my ISDC account:
<njw> /home/isdc_guest/westerga/jemx/ic_files/imod_grp
<njw> END
<smaisala> Thank you for this information. END
> I'm currently working on a version of j_prp_verify that writes out the
<silvia> One question: Will all these latests updates be included in the OSA release ? END
<njw> Yes END
<silvia> Perfect ! END
> histogram of event populations per RAWX value for dead anode checking, but the
> sCREW on that one isn't even accepted yet, and I think I'll have to do some
> negotiations at ISDC to get the change cleared. Apart from that there's a
> new j_cor_position on the horizon that won't be included in OSA, that will
> flag events from dead anodes and near calibration spectra overspill sites.
> Any questions about these components? You'll get more details next week. END
<silvia> N
<jerome> Sorry for a silly question, but is it on purpose that RATE_COR does 
<jerome> not include grey filter effects?
> The reason I had to change back to a RATE_COR without grey filter effects, is
<smaisala> ls
> that that's how Peter and Stefan said they wanted it last week. But as I say
<smaisala> Sorry! Wrong window :) END
*** peter (~pkretsch@isdcul19.unige.ch) has joined channel #jemxadr
> you can get all the full effects by using DEAD_EFF instead of RATE_COR, as
> I said above. END
<larsson> Look who popped up!   Hi Peter!
<silvia> Hola Peter  ! END
<peter> Hi, sorry I'm late - several problems of JEM-X analysis fell in my lap today - usually the wrong combination of ISSW and IC files and I forgot to look at the time. END
> Welcome back, stranger! END
<jerome> Salut Peter!
> You're just in time to hear NJW's status for imaging ISSW, Peter. So NJW,
<peter> I also have the next meeting at 14:00 - OSA release. 
> how's it going? END
<njw> j_ima_shadowgram has been adapted to new RATE_COR, j_ima_basic_recon will need
<njw> a post-OSA-release brush-up, j_ima_src_find still has a problem with
<njw> catalog sources on top of found sources, j_ima_cor_intensity seems OK. END
<njw> That was the short version END
> Thanks, NJW. Any questions anyone? END
<silvia> N
<larsson> N
> N
<jerome> N
<smaisala> N
> Okay, Sami, background handling - your status please. END
<smaisala> Status is normal as ususal. I'm just trying to run analysis with new j_gain_cor version, but as above you said I need these few new keywords to set before I can have reasonable results.
> You don't have to set the value of the keywords Sami - the program reads them
> automatically from the SPAG-MOD header. END
<peter> You need the correc IMOD files. END
<smaisala> I used ic_tree  4.37 found from ISDC. Is that newest one?
<peter> Yes and that should have those keywords. END
<smaisala> Ok I had run rev 0024 and I found quite strange results conserning spectral shapes - as usual. 
> Rev 0024 is quite a long way back - we've changed quite a few things on the
<peter> Interrupt - question to NJW: Analyzing the Crab for revol. 39 with the latest ISSW, we get a flux of ~ 40 cps, shouldn't that be ~ 100? END
<smaisala> The gain is now much better on those two anode parts which were our problem, but the central parts seems to be worse?
> isntrument - perhaps you should try something later with the new discriminator
> setting since this will affect the background quite a lot, as will the new
> high-energy cut off - we can see the effect of the latter quite clearly in
> the data. END
> NJW, when was the last time the hardware guys made a new patch to the onboard
> software? END
<smaisala> Yes, I can see the point but unfortunately it is the only 'useful' blank field data. END
<njw> To Peter on Crab countrate: JMX1 or JMX2 ? END
<njw> To Carol Anne on last patch: rejection criteria changed 2003-02-25 END
<peter> JMX2
<peter> And actually rev 39 was before that patch. END
<peter> That could easily explain a different rate, right? END
<jerome> To Sami: about useful blank data, have you tried the Crab calib. with 10 degrees offset?
<jerome> I use it, it is very useful! END
<smaisala> To Jerome. Thanks, for the tip. I'll try that. END
<njw> To Peter: just checked with Carl: Yes, the JMX2 countrate for the Crab on-axis
> Yess I think that a recent blank Crab field will be a lot more useful. END
<njw> should be just a little less than 100 cts/s (full detector, no radiusLimit)
> Any more on background status? END
<njw> for JMX1 it was somewhat lower END
<peter> I agree for the background fields. END
<smaisala> To NJW/ Jerome: Would you send me an email where is a list of the best scws of that crab data. END
<jerome> I am sorry I have not the ScWs, but I have the dates. Is that OK? END
<smaisala> Yes. END
<silvia> To Peter and Niels Joergen: in order to get a good analysis of data of rev. 39, which should ic_tree version be used ? END
<jerome> Well I send it to you. END
<njw> Look at the pointing files in /r2/jemx/pointings to convert dates to SWIDs END
> Look in /isdc/pvphase/nrt/ops_1/idx/scw/raw or ../prp for GNRL-SCWG-GRP-IDX
> to find the SCW you need. END
<njw> To Silvia: IC 4.37 should cover all times END
<peter> The IC tree should always be the latest - it is supposed to cover all time intervals.
<silvia> Thanks ! END
<peter> But remember that we do not have response files for the pre-change yet. END
> Can we move on to binning status now - how's it going Peter? END
<njw> I'm working on updating the response files i.e. analyzing the Crab
<njw> spectra to see what changes are required END
<peter> No news for binning status - it works with a minor caveat on GTI handling. I also won't have  more to say at Valencia. END
> Any questions on binning anyone? END
<silvia> N 
<larsson> n
<peter> Btw, Silvia - we will have a projector, right? I plan to bring a CD with a presentation, if I manage. END
> N
<jerome> N
<njw> N
<smaisala> N
> Okay, next on the agenda: source extraction - how's that going Stefan? END
<silvia> Yes, we will ! END
<larsson> I have made new deliveries of j_src_lc and j_src_spectra the last few weeks.
<larsson> It includes e.g. the missalignment correction.
> That's good news Stefan. END
<larsson> At the moment I am trying to identify an error in flux estimates
<larsson> which shows up for weak sources.
<larsson> I'll let you know next week how that proceeds. END
> Any questions on source extraction anyone? END
> n
<silvia> Oh ... that's means that that flux values for 2030 are not good, are they ? END
<peter> N
<larsson> Well, there is a systematic error. I can tell you what it is in
<larsson> a particular case but I can not take it away yet (at least not all
<larsson> of it.) END
<silvia> Ok, I hope we have time next week to discuss about this systematic error END
> Any more on source extraction? END
<silvia> N
<larsson> No, the rest is for next week. END
> N
> Lets move on to scripts: the short version, Peter and Silvia. END
<silvia> Nothing new to report on the scripts. The latest version delivered two weeks ago (v 3.3.1),
<silvia> it is working nicely under OSA integration. None SPR and SCREWS have been found (yet). Any questions ? END
<peter> Stefan, could you send Masha and me a short note on what the problem for weak sources is? END
<peter> The scripts work fine. END
<silvia> Stefan: send me also the short note , thanks ! END
> Hurray for scripts.......I'm very glad something works fine! Next on the
> agenda: any changes to the draft o the agenda for the meeting next week:
> I've just sent you all the latest version with NJW's addition. I've also
<larsson> OK Peter, Silvia. END
> noticed that the end time for my ICAL presentation should be 17.55, not 18.55.
> Other comments? END
<peter> Sorry, gott run - no more commentson agenda. END
> Bye Peter, have another good meeting. END
<silvia> Have a nice weekend in Barcelona Peter - See you on monday ! END
<silvia> No comments on agenda ... END
<jerome> Same from me. END
<larsson> No
> Okay, could we move on then: NJW what's this about a Science Performance/Verification
> report? What is is and what do you need from us, and when? END
<njw> I have distributed a mail from Isabelle on this; actually Peter is in a
<njw> better position to explain what is wanted from us. In any case we cannot
<njw> make it this week, so I think we should discuss it at the SDAST meeting END
> So that's an addition to the agenda? END
<njw> Yes, sorry I did not think of it 5 minutes ago END
> Thanks for the eamil and attachments Sami - I'll take a good look at them
> after the meeting. I'll add the SVPR, or whatever it's called to the agenda.
> Next on the agenda: AI list. Shall we skip that till next week? END
<njw> Yes, please END
<silvia> Yes, please END
> Okay, point 5: does anyone seriously want to volunteer for this? END
<silvia> Nooooooo !!!! END
> N
<larsson> At least those who proposed it?!
<larsson> Shall we say the beach in Spain?
> If it's not too chilly.......
<silvia> Stefan, Are you travelling to Alicante ? END
> That leaves us with AOB - AOB anyone? END
<njw> N
<silvia> N
<jerome> Sami and Silvia, have you anything to contribute with for the minutes
<larsson> Silvia: Yes. END
<jerome> of the last consortium meeting in CPH?
<jerome> END
<silvia> What time do you arrive to Alicante ? END
<larsson> I will arrive about 10.40. END
<silvia> Sorry Jerome ! The presentation is in my boss lpatop, and last week I was on holidays and this week he is missing ! May be, I will manage to send to you next week ! END
<silvia> In the morning !
> So there's time for you to pose on the beach then? END
<jerome> OK, silvia. Sami? Niels Jrgen? END
<larsson> Yes, in the morning! (Direct flight). But I can take a train. END
<smaisala> I'll do that immediately END
<njw> I'll see to it END
<silvia> I do not know yet if this weekend I will go home. If yes, may be, i can pick you ! I will send you an email tomorrow ! END
<silvia> What time do all of you arrive to Valencia on Sunday ? END
<smaisala> I'll be there at 19:30 END
<jerome> The "Danish" team arrives at 19:30 END
<silvia> My mobil phone is +34/653569444. If you need any help, please call me ! END
> Thanks Silvia - we'll try to bother you only for real emergencies. END
<silvia> Ok, the chat is over ! I think ! See you all of you next monday ! Have a nice trip to Alicante/Valencia ! END 
<jerome> Silvia, can you guarantee that we will have good weather in Valencia? END
> Have a good weekend, and see you all for real on Monday! END
<silvia> No, really ! I am sorry ! 
<silvia> Good weekend everyone ! Bye ! END
<larsson> OK Bye, bye END
> Goodbye. END
