ASTROSAT CZTI

Data Quality Report

Orbit 20210310_A10_102T08_9000004240_level2

Creation date: 2021-03-18T12:25:09.270389
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_102T08_9000004240cztM0_level2_bc.evt modeM0/AS1A10_102T08_9000004240cztM0_level2_quad_clean.evt
Size (bytes)4,214,635,200625,204,800
Size3.9 GB 596.2 MB
Events in quadrant A12,773,1184,275,097
Events in quadrant B12,291,3694,346,795
Events in quadrant C12,789,7103,985,172
Events in quadrant D86,113,5322,615,122

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01165700
B01154990
C01224630
D03761590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010980
B011000
C010980
D010980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540249831.819562%
B5400911822.188524%
C5402138377.102793%
D538503434363.775302%

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 68363 54121 8 8 0.01% 0.01%
B 68363 54098 3 3 0.00% 0.01%
C 68363 54095 2 2 0.00% 0.00%
D 68363 53899 14383 14383 21.04% 26.69%

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 0 13 892758 1376.82 3039 2992 646.2
A 13 254 97203 145.78 3039 2992 646.2
A 1 113 83661 124.83 3039 2992 646.2
B 5 255 132368 226.23 3073 3008 571.8
B 0 190 79776 134.26 3073 3008 571.8
B 0 230 71488 119.76 3073 3008 571.8
C 3 233 1328985 1998.85 2833 2823 663.5
C 14 254 449620 673.43 2833 2823 663.5
C 2 114 103506 151.75 2833 2823 663.5
D 8 195 48925059 100942.46 2098 2030 484.7
D 1 52 12662525 26122.29 2098 2030 484.7
D 7 80 11819751 24383.4 2098 2030 484.7

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