ASTROSAT CZTI

Data Quality Report

Orbit 57399

Creation date: 2026-05-08T07:38:42.018981
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/AS1A14_102T01_9000006572_57399cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57399cztM0_level2_quad_clean.evt
Size (bytes)668,638,08099,319,680
Size637.7 MB 94.7 MB
Events in quadrant A4,130,584677,536
Events in quadrant B3,782,697712,161
Events in quadrant C11,140,232481,379
Events in quadrant D5,062,808567,512

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181270
B0174290
C0387767
D0208270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8174360.440421%
B8174610.746269%
C8173266332.582895%
D81743173.878150%

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 8446 8446 15 15 0.18% 0.18%
B 8446 8446 12 12 0.14% 0.14%
C 8445 8435 2004 2004 23.73% 23.76%
D 8446 8446 264 264 3.13% 3.13%

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 3 14 419067 1918.76 889 867 218.0
A 0 12 137230 625.65 889 867 218.0
A 13 248 57160 258.28 889 867 218.0
B 7 252 92796 479.3 887 852 191.8
B 0 245 60939 313.23 887 852 191.8
B 5 185 48043 246.01 887 852 191.8
C 15 224 7056961 35899.37 730 722 196.6
C 6 223 808773 4111.05 730 722 196.6
C 14 254 126950 642.2 730 722 196.6
D 7 96 784921 3367.13 839 800 232.9
D 8 240 387641 1661.15 839 800 232.9
D 2 249 151802 648.42 839 800 232.9

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