ASTROSAT CZTI

Data Quality Report

Orbit 31994

Creation date: 2024-06-27T20:34:56.695138
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/AS1A10_058T12_9000004674_31994cztM0_level2.evt modeM0/AS1A10_058T12_9000004674_31994cztM0_level2_quad_clean.evt
Size (bytes)623,004,48080,953,920
Size594.1 MB 77.2 MB
Events in quadrant A3,699,713501,031
Events in quadrant B5,782,991494,252
Events in quadrant C5,002,955468,105
Events in quadrant D3,879,525471,604

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155282
B0227042
C0199532
D0163792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74211471.980865%
B74202984.016173%
C74206148.274933%
D74211471.980865%

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 7666 7422 0 0 0.00% 0.00%
B 7665 7420 21 21 0.27% 0.28%
C 7665 7420 14 14 0.18% 0.19%
D 7666 7421 25 25 0.33% 0.34%

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 13 6 18868 93.33 951 929 192.2
A 13 254 12729 61.39 951 929 192.2
A 1 113 11909 57.13 951 929 192.2
B 6 159 1936459 10755.96 930 906 180.0
B 10 245 79061 434.31 930 906 180.0
B 5 172 55174 301.57 930 906 180.0
C 3 233 1089380 5283.28 877 880 206.0
C 14 238 228826 1106.39 877 880 206.0
C 14 254 119819 577.29 877 880 206.0
D 8 195 245903 1113.3 916 891 220.1
D 7 238 74757 335.64 916 891 220.1
D 11 164 49233 219.66 916 891 220.1

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