ASTROSAT CZTI

Data Quality Report

Orbit 32823

Creation date: 2024-06-27T20:42:24.621164
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/AS1A11_044T01_9000004732_32823cztM0_level2.evt modeM0/AS1A11_044T01_9000004732_32823cztM0_level2_quad_clean.evt
Size (bytes)1,049,149,440176,613,120
Size1000.5 MB 168.4 MB
Events in quadrant A5,795,8741,189,555
Events in quadrant B6,312,8601,195,350
Events in quadrant C5,028,5581,219,429
Events in quadrant D13,980,5511,068,690

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235743
B0249292
C0213072
D0484422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97402042.094456%
B97404224.332649%
C97401051.078029%
D9741183118.796838%

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 11052 9741 134 134 1.21% 1.38%
B 11052 9741 276 276 2.50% 2.83%
C 11052 9741 96 96 0.87% 0.99%
D 11053 9742 1865 1865 16.87% 19.14%

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 14 238 1310995 5931.66 1102 1078 220.8
A 15 17 95432 427.26 1102 1078 220.8
A 9 143 52106 231.07 1102 1078 220.8
B 5 172 1075473 5195.86 1100 1071 206.8
B 0 219 337920 1629.02 1100 1071 206.8
B 5 200 190556 916.36 1100 1071 206.8
C 0 10 488540 1933.57 1087 1094 252.1
C 3 233 139787 550.16 1087 1094 252.1
C 14 67 95835 375.81 1087 1094 252.1
D 8 195 6486314 25835.26 1025 1001 251.0
D 2 250 929045 3697.01 1025 1001 251.0
D 12 6 878932 3497.38 1025 1001 251.0

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