ASTROSAT CZTI

Data Quality Report

Orbit 20230328_A12_011T26_9000005548_level2

Creation date: 2023-03-30T17:16:32.667756
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_011T26_9000005548cztM0_level2.fits modeM0/AS1A12_011T26_9000005548cztM0_level2_quad_clean.evt
Size (bytes)391,803,840363,864,960
Size373.7 MB 347.0 MB
Events in quadrant A2,418,1702,236,046
Events in quadrant B2,310,7302,237,117
Events in quadrant C2,347,9002,100,078
Events in quadrant D1,739,1061,400,007

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0963540
B0943060
C0948610
D01378200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09060
B09060
C09060
D09060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01830
B01830
C01830
D01830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44368870.196087%
B443524601.037157%
C443582480.559087%
D443691070524.127206%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 62613 44382 0 0 0.00% 0.00%
B 62613 44374 0 0 0.00% 0.00%
C 62613 44376 0 0 0.00% 0.00%
D 62613 44210 0 0 0.00% 0.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 7 110 2015 9.13 630 592 155.9
A 0 29 1941 8.65 630 592 155.9
A 9 19 1904 8.42 630 592 155.9
B 2 9 1995 11.9 610 583 118.7
B 3 80 1683 9.27 610 583 118.7
B 2 8 1654 9.02 610 583 118.7
C 3 202 1874 8.05 620 580 160.7
C 1 81 1859 7.96 620 580 160.7
C 3 203 1855 7.93 620 580 160.7
D 7 3 1378 6.25 505 460 146.9
D 6 67 1352 6.07 505 460 146.9
D 6 38 1294 5.67 505 460 146.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter