ASTROSAT CZTI

Data Quality Report

Orbit 08768

Creation date: 2024-06-27T15:36:55.693790
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/AS1A03_038T01_9000001218_08768cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08768cztM0_level2_quad_clean.evt
Size (bytes)600,744,96091,995,840
Size572.9 MB 87.7 MB
Events in quadrant A3,783,186592,627
Events in quadrant B3,430,173605,254
Events in quadrant C3,439,209590,281
Events in quadrant D7,062,224505,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0201
C0201
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016622831
B015456708
C015633692
D0283072632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542
B01544
C01544
D01546

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70821672.358091%
B70791482.090691%
C70921211.706148%
D6893107115.537502%

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 9456 7322 13 13 0.14% 0.18%
B 9461 7353 0 0 0.00% 0.00%
C 9458 7356 4 4 0.04% 0.05%
D 9455 7166 896 896 9.48% 12.50%

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 8 5 241327 1320.78 887 867 182.1
A 13 251 96574 525.69 887 867 182.1
A 3 1 24772 131.3 887 867 182.1
B 12 111 19158 107.33 882 858 170.5
B 11 111 15476 85.73 882 858 170.5
B 14 111 11932 64.95 882 858 170.5
C 9 68 74997 367.26 860 863 201.9
C 13 61 6378 27.32 860 863 201.9
C 9 54 5796 24.44 860 863 201.9
D 2 16 3814388 19417.33 774 755 196.4
D 2 152 113907 576.12 774 755 196.4
D 5 233 55878 280.66 774 755 196.4

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