ASTROSAT CZTI

Data Quality Report

Orbit 03795

Creation date: 2024-06-27T14:33:46.260808
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/AS1G05_152T03_9000000488_03795cztM0_level2.evt modeM0/AS1G05_152T03_9000000488_03795cztM0_level2_quad_clean.evt
Size (bytes)639,230,40089,717,760
Size609.6 MB 85.6 MB
Events in quadrant A5,636,245560,085
Events in quadrant B5,592,575543,321
Events in quadrant C3,899,007557,062
Events in quadrant D3,737,367548,314

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216052
B0213561
C0166071
D0160641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72925117.007680%
B72927019.613275%
C72922162.962150%
D72921331.823917%

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 7852 7292 267 267 3.40% 3.66%
B 7852 7292 523 523 6.66% 7.17%
C 7852 7292 134 134 1.71% 1.84%
D 7852 7292 36 36 0.46% 0.49%

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 13 251 1364072 7817.96 833 810 174.4
A 0 50 632830 3624.47 833 810 174.4
A 0 118 185026 1056.43 833 810 174.4
B 0 173 1041636 6447.94 827 805 161.4
B 14 167 567567 3511.08 827 805 161.4
B 15 204 481059 2975.17 827 805 161.4
C 2 53 608012 3183.62 816 818 190.7
C 12 4 44450 228.77 816 818 190.7
C 10 65 28533 145.31 816 818 190.7
D 1 84 194728 972.05 823 798 199.5
D 13 239 91430 454.28 823 798 199.5
D 8 112 90007 447.15 823 798 199.5

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
Veto Counter