ASTROSAT CZTI

Data Quality Report

Orbit 45725

Creation date: 2024-06-27T23:15:27.593691
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_183T01_9000006124_45725cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45725cztM0_level2_quad_clean.evt
Size (bytes)627,094,080127,987,200
Size598.0 MB 122.1 MB
Events in quadrant A6,984,523854,082
Events in quadrant B5,258,335863,627
Events in quadrant C3,889,245861,180
Events in quadrant D6,471,488748,636

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261562
B0208092
C0171902
D0246383

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78741441.828804%
B78742463.124206%
C7875710.901587%
D78745336.769114%

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 7889 7875 4 4 0.05% 0.05%
B 7889 7874 162 162 2.05% 2.06%
C 7890 7876 58 58 0.74% 0.74%
D 7889 7874 512 512 6.49% 6.50%

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 3381355 17885.94 904 885 189.0
A 7 3 36465 188.25 904 885 189.0
A 13 248 32942 169.61 904 885 189.0
B 3 112 755902 4271.57 892 864 176.8
B 4 171 368091 2077.56 892 864 176.8
B 4 200 153119 861.37 892 864 176.8
C 14 254 276739 1310.62 887 891 210.5
C 12 2 35207 163.04 887 891 210.5
C 0 207 34420 159.3 887 891 210.5
D 1 52 1539332 6953.77 867 838 221.2
D 13 249 602261 2718.35 867 838 221.2
D 2 249 423367 1909.77 867 838 221.2

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