ASTROSAT CZTI

Data Quality Report

Orbit 55085

Creation date: 2025-12-03T15:05:03.631130
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_025T01_9000006530_55085cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55085cztM0_level2_quad_clean.evt
Size (bytes)410,716,800105,744,960
Size391.7 MB 100.8 MB
Events in quadrant A3,266,924687,970
Events in quadrant B3,547,716737,248
Events in quadrant C3,536,898665,104
Events in quadrant D4,293,912612,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150992
B0157882
C0158692
D0180492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71661462.037399%
B71662453.418923%
C71671161.618529%
D71672152.999860%

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 9016 7166 1 1 0.01% 0.01%
B 9016 7166 32 32 0.35% 0.45%
C 9017 7167 27 27 0.30% 0.38%
D 9017 7168 104 104 1.15% 1.45%

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 0 250 32621 158.91 816 796 200.3
A 4 3 24532 118.52 816 796 200.3
A 13 254 23087 111.3 816 796 200.3
B 5 185 343921 1967.54 798 765 174.4
B 12 111 21500 118.89 798 765 174.4
B 11 111 20003 110.3 798 765 174.4
C 6 223 127143 582.4 790 779 217.0
C 13 3 85423 390.12 790 779 217.0
C 1 16 76078 347.05 790 779 217.0
D 11 129 401670 1837.08 779 747 218.2
D 15 94 142564 649.82 779 747 218.2
D 2 249 122284 556.9 779 747 218.2

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