ASTROSAT CZTI

Data Quality Report

Orbit 34231

Creation date: 2022-01-27T00:22:30.979824
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/AS1T05_003T01_9000004886_34231cztM0_level2.evt modeM0/AS1T05_003T01_9000004886_34231cztM0_level2_quad_clean.evt
Size (bytes)414,040,32068,313,600
Size394.9 MB 65.1 MB
Events in quadrant A2,497,160423,808
Events in quadrant B2,818,262438,112
Events in quadrant C3,342,372425,263
Events in quadrant D3,520,798409,649

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108803
B0116422
C0131082
D0139142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A530770.131901%
B5307661.243640%
C53071422.675711%
D5307841.582815%

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 7069 5308 2 2 0.03% 0.04%
B 7069 5308 44 44 0.62% 0.83%
C 7069 5308 95 95 1.34% 1.79%
D 7069 5308 67 67 0.95% 1.26%

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 9 143 31216 245.53 624 612 124.6
A 10 83 23643 184.77 624 612 124.6
A 13 6 14275 109.62 624 612 124.6
B 5 172 213498 1789.57 628 613 119.0
B 0 189 44869 372.03 628 613 119.0
B 3 112 28722 236.29 628 613 119.0
C 0 10 279818 1952.41 616 623 143.0
C 14 254 271976 1897.57 616 623 143.0
C 15 214 230469 1607.31 616 623 143.0
D 8 195 623863 4072.55 620 605 153.0
D 2 249 210213 1369.64 620 605 153.0
D 12 6 163973 1067.49 620 605 153.0

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