ASTROSAT CZTI

Data Quality Report

Orbit 06936

Creation date: 2024-06-27T15:13:24.688723
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/AS1A02_103T01_9000000950_06936cztM0_level2.evt modeM0/AS1A02_103T01_9000000950_06936cztM0_level2_quad_clean.evt
Size (bytes)908,023,68074,465,280
Size866.0 MB 71.0 MB
Events in quadrant A3,281,917510,818
Events in quadrant B4,229,943512,870
Events in quadrant C15,502,501244,072
Events in quadrant D4,007,844493,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145843
B0173492
C0508512
D0165722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7061510.722277%
B70612072.931596%
C7061592883.954114%
D70611001.416230%

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 7651 7062 0 0 0.00% 0.00%
B 7651 7062 17 17 0.22% 0.24%
C 7651 7062 4638 4638 60.62% 65.68%
D 7651 7062 17 17 0.22% 0.24%

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 0 226 8158 42.23 847 829 173.6
A 12 194 7669 39.41 847 829 173.6
A 4 2 7227 36.86 847 829 173.6
B 0 228 695084 4279.56 846 823 162.2
B 4 48 83379 508.89 846 823 162.2
B 4 81 67743 412.51 846 823 162.2
C 9 247 14002645 158577.31 377 379 88.3
C 10 22 14878 164.2 377 379 88.3
C 7 247 8685 94.07 377 379 88.3
D 8 195 317741 1573.23 823 797 201.5
D 2 136 312731 1548.36 823 797 201.5
D 2 152 91816 451.79 823 797 201.5

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