ASTROSAT CZTI

Data Quality Report

Orbit 03721

Creation date: 2024-06-27T14:32:50.671793
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/AS1G05_182T01_9000000484_03721cztM0_level2.evt modeM0/AS1G05_182T01_9000000484_03721cztM0_level2_quad_clean.evt
Size (bytes)481,112,64084,605,760
Size458.8 MB 80.7 MB
Events in quadrant A3,624,804531,294
Events in quadrant B3,664,775535,744
Events in quadrant C3,275,370520,740
Events in quadrant D3,543,864500,897

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150313
B0149852
C0141992
D0151562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67862283.359859%
B67861752.578839%
C67861502.210433%
D67862203.241969%

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 7831 6786 49 49 0.63% 0.72%
B 7831 6786 3 3 0.04% 0.04%
C 7831 6786 9 9 0.11% 0.13%
D 7831 6786 76 76 0.97% 1.12%

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 0 118 127791 736.05 841 823 172.5
A 15 234 101238 582.12 841 823 172.5
A 0 50 95121 546.66 841 823 172.5
B 15 204 291333 1776.11 847 826 163.6
B 2 249 30482 181.31 847 826 163.6
B 4 81 30220 179.71 847 826 163.6
C 2 53 74755 390.95 811 812 189.1
C 9 144 14550 72.64 811 812 189.1
C 1 16 10365 50.51 811 812 189.1
D 13 223 170706 861.27 814 791 197.3
D 9 35 88064 442.37 814 791 197.3
D 2 37 79612 399.53 814 791 197.3

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
Veto Counter