ASTROSAT CZTI

Data Quality Report

Orbit 46174

Creation date: 2024-06-27T23:20:01.436175
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/AS1T05_194T01_9000006180_46174cztM0_level2.fits modeM0/AS1T05_194T01_9000006180_46174cztM0_level2_quad_clean.evt
Size (bytes)669,769,920119,119,680
Size638.7 MB 113.6 MB
Events in quadrant A6,693,367814,126
Events in quadrant B5,864,048800,275
Events in quadrant C3,395,213796,848
Events in quadrant D8,243,224658,970

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248911
B0226951
C0160011
D0299741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77122503.241701%
B77135587.234539%
C7713540.700117%
D7713107513.937508%

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 7802 7714 32 32 0.41% 0.41%
B 7803 7715 223 223 2.86% 2.89%
C 7803 7715 2 2 0.03% 0.03%
D 7803 7715 785 785 10.06% 10.17%

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 3210002 18146.82 855 835 176.8
A 7 3 94863 531.7 855 835 176.8
A 9 191 63235 352.85 855 835 176.8
B 3 112 1954084 11767.93 842 815 166.0
B 5 171 335781 2018.08 842 815 166.0
B 15 201 124324 744.11 842 815 166.0
C 12 2 47291 233.49 842 843 198.9
C 3 233 34636 169.87 842 843 198.9
C 14 254 29748 145.3 842 843 198.9
D 1 52 3021271 15165.42 793 767 199.2
D 2 37 549528 2755.23 793 767 199.2
D 13 249 451267 2261.88 793 767 199.2

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