ASTROSAT CZTI

Data Quality Report

Orbit 33973

Creation date: 2024-06-27T20:54:48.969476
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/AS1A11_037T01_9000004858_33973cztM0_level2.evt modeM0/AS1A11_037T01_9000004858_33973cztM0_level2_quad_clean.evt
Size (bytes)695,543,04056,111,040
Size663.3 MB 53.5 MB
Events in quadrant A8,393,76451,041
Events in quadrant B3,297,077460,290
Events in quadrant C3,143,133444,208
Events in quadrant D5,902,818402,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298951565
B013454487
C013161605
D021851906

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01024
B01024
C01028
D01024

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268
B02611
C02611
D0278

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4809480499.896028%
B48491242.557228%
C4840972.004132%
D483985417.648274%

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 7111 4837 2253 2253 31.68% 46.58%
B 7112 4870 86 86 1.21% 1.77%
C 7112 4866 68 68 0.96% 1.40%
D 7112 4864 771 771 10.84% 15.85%

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 15 169 8006141 381949.27 98 96 21.0
A 10 83 4296 200.37 98 96 21.0
A 13 254 1444 64.31 98 96 21.0
B 5 172 440346 3765.43 638 624 116.8
B 0 190 128309 1093.39 638 624 116.8
B 0 219 55132 466.76 638 624 116.8
C 3 233 226995 1594.03 630 635 142.0
C 15 214 213803 1501.13 630 635 142.0
C 0 10 182553 1281.07 630 635 142.0
D 12 33 1678362 11514.39 602 586 145.7
D 8 195 840424 5763.72 602 586 145.7
D 2 250 493406 3382.17 602 586 145.7

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