ASTROSAT CZTI

Data Quality Report

Orbit 16534

Creation date: 2024-06-27T17:24:05.079178
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/AS1T03_018T01_9000002442_16534cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16534cztM0_level2_quad_clean.evt
Size (bytes)586,512,00089,596,800
Size559.3 MB 85.4 MB
Events in quadrant A4,181,817530,933
Events in quadrant B4,548,690543,183
Events in quadrant C4,388,753533,478
Events in quadrant D4,073,581522,817

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178963
B0187752
C0181472
D0180062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83823494.163684%
B83824014.784061%
C83823894.640897%
D83822903.459795%

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 8988 8383 1 1 0.01% 0.01%
B 8988 8383 10 10 0.11% 0.12%
C 8988 8383 0 0 0.00% 0.00%
D 8988 8383 20 20 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 15 174 94544 430.38 1051 1022 217.3
A 3 1 45954 206.77 1051 1022 217.3
A 0 226 9125 37.29 1051 1022 217.3
B 15 35 135288 653.17 1053 1024 205.6
B 3 209 47663 226.89 1053 1024 205.6
B 0 197 42208 200.35 1053 1024 205.6
C 3 233 240992 994.71 1013 1019 241.2
C 14 238 151538 623.91 1013 1019 241.2
C 7 247 40301 162.83 1013 1019 241.2
D 10 70 91147 329.73 1023 999 273.4
D 7 38 37096 132.03 1023 999 273.4
D 2 234 36297 129.11 1023 999 273.4

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