ASTROSAT CZTI

Data Quality Report

Orbit 25503

Creation date: 2024-06-27T19:18:23.538058
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/AS1A08_003T17_9000003720_25503cztM0_level2.evt modeM0/AS1A08_003T17_9000003720_25503cztM0_level2_quad_clean.evt
Size (bytes)511,153,92067,965,120
Size487.5 MB 64.8 MB
Events in quadrant A3,546,757414,714
Events in quadrant B3,621,244421,123
Events in quadrant C3,507,541389,181
Events in quadrant D4,362,296377,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143080
B0146310
C0142390
D0170630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6528350.536152%
B6528560.857843%
C6528791.210172%
D65281922.941176%

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 7823 6529 0 0 0.00% 0.00%
B 7823 6529 7 7 0.09% 0.11%
C 7823 6529 6 6 0.08% 0.09%
D 7823 6529 145 145 1.85% 2.22%

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 13 254 9691 48.45 918 902 181.4
A 0 226 7923 38.7 918 902 181.4
A 3 137 7865 38.38 918 902 181.4
B 12 111 20158 113.2 915 897 170.2
B 5 171 18120 101.22 915 897 170.2
B 11 111 17904 99.95 915 897 170.2
C 14 238 141353 707.87 857 866 198.5
C 2 16 21114 102.02 857 866 198.5
C 13 61 5970 25.72 857 866 198.5
D 1 52 750848 3672.26 855 833 204.2
D 2 82 149831 729.53 855 833 204.2
D 8 195 147636 718.78 855 833 204.2

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