ROSAT Guest Observer Facility

What is the correspondence between the PROS 34-channel spectra and the PI bins?

(2/16/94)


The correspondence between the PROS 34-channel spectra and PI bins is listed below. The PI bins, 256 channels, are ~10 eV wide, with the low energy given by E_low = N_chan * 10.0 eV. The lower level discriminator is set in ADC channel 7, hence the warning.

                      Energy           PI bins
         channel    Low    High   (ADC channels present)
            1      0.07    0.09         7+ 8   <------ NOT TO BE USED
            2      0.09    0.11         9+10              IN ANY FIT
            3      0.11    0.14        11-->13 <------ start here after
            4      0.14    0.17        14-->16         11 October 1991
            5      0.17    0.20        17-->19 
            6      0.20    0.24        20-->23
            7      0.24    0.28        24-->27
            8      0.28    0.32        28-->31
            9      0.32    0.37        32-->36
           10      0.37    0.42        37-->41
           11      0.42    0.47        42-->46
           12      0.47    0.52        47-->51
           13      0.52    0.58        52-->57
           14      0.58    0.64        58-->63
           15      0.64    0.70        64-->69
           16      0.70    0.77        70-->76
           17      0.77    0.84        77-->83
           18      0.84    0.91        84-->90
           19      0.91    0.99        91-->98
           20      0.99    1.07        99-->106
           21      1.07    1.15       107-->114
           22      1.15    1.23       115-->122
           23      1.23    1.32       123-->131
           24      1.32    1.41       132-->140
           25      1.41    1.50       141-->149
           26      1.50    1.60       150-->159
           27      1.60    1.70       160-->169
           28      1.70    1.80       170-->179
           29      1.80    1.91       180-->190
           30      1.91    2.02       191-->201
           31      2.02    2.13       202-->212	<---Poorly calibrated
           32      2.13    2.24       213-->223     eff. area and energy
           33      2.24    2.36       224-->235	    response at energies 
           34      2.36    2.48       236-->247     above 2 keV.


button Select another question related to this topic

Select another FAQ topic Select another FAQ topic Return to the ROSAT GOF Return to the ROSAT GOF



Please use the Feedback link if you have questions on ROSAT.

This file was last modified on Friday, 27-Jul-2001 14:57:43 EDT

NASA Astrophysics

  • FAQ/Comments/Feedback
  • Education Resources
  • Download Adobe Acrobat
  • A service of the Astrophysics Science Division (ASD) at NASA/ GSFC

    ROSAT Project Scientist: Dr. Robert Petre

    Responsible NASA Official: Dr. Andy Ptak

    Privacy Policy and Important Notices.