ASTROSAT CZTI

Data Quality Report

Orbit 46943

Creation date: 2024-06-27T23:29:45.212098
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/AS1A13_077T01_9000006286_46943cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46943cztM0_level2_quad_clean.evt
Size (bytes)804,058,560114,465,600
Size766.8 MB 109.2 MB
Events in quadrant A7,738,069814,799
Events in quadrant B10,851,908591,933
Events in quadrant C3,855,729806,616
Events in quadrant D6,716,327710,358

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282120
B0376660
C0171551
D0254350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77891842.362306%
B7789249131.980999%
C7788781.001541%
D77885046.471495%

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 7789 7789 25 25 0.32% 0.32%
B 7789 7789 1894 1894 24.32% 24.32%
C 7788 7788 68 68 0.87% 0.87%
D 7788 7788 455 455 5.84% 5.84%

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 10 83 4208245 22931.85 869 850 183.5
A 13 248 84492 455.88 869 850 183.5
A 15 235 28954 153.18 869 850 183.5
B 3 112 7315330 47940.75 770 748 152.6
B 4 171 178407 1164.4 770 748 152.6
B 15 36 59233 383.32 770 748 152.6
C 14 254 300679 1476.01 854 858 203.1
C 12 2 145516 712.15 854 858 203.1
C 14 224 48631 235.18 854 858 203.1
D 1 52 2254122 10645.43 836 812 211.7
D 13 249 472122 2226.63 836 812 211.7
D 13 169 293966 1384.96 836 812 211.7

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