ASTROSAT CZTI

Data Quality Report

Orbit 53417

Creation date: 2025-08-14T15:26:47.078579
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/AS1C09_011T09_9000006494_53417cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53417cztM0_level2_quad_clean.evt
Size (bytes)952,076,16098,637,120
Size908.0 MB 94.1 MB
Events in quadrant A5,344,260741,256
Events in quadrant B6,748,782765,094
Events in quadrant C17,468,169240,588
Events in quadrant D5,056,925679,134

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216291
B0257301
C0572971
D0208681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80653514.352139%
B80657879.758215%
C8065578171.680099%
D80652843.521389%

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 8080 8066 281 281 3.48% 3.48%
B 8080 8066 524 524 6.49% 6.50%
C 8080 8065 5550 5550 68.69% 68.82%
D 8080 8066 238 238 2.95% 2.95%

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 15 174 691516 3332.83 838 815 207.2
A 3 63 581362 2801.31 838 815 207.2
A 3 62 203144 976.29 838 815 207.2
B 4 206 1951614 11212.75 825 797 174.0
B 4 171 329117 1887.09 825 797 174.0
B 10 254 279057 1599.36 825 797 174.0
C 1 241 9879201 71899.18 496 492 137.4
C 15 224 4127943 30040.4 496 492 137.4
C 9 38 566422 4118.95 496 492 137.4
D 3 12 384532 1632.88 821 780 235.0
D 0 18 330794 1404.22 821 780 235.0
D 2 153 205891 872.75 821 780 235.0

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