ASTROSAT CZTI

Data Quality Report

Orbit 20190428_A05_104T05_9000002860_level2

Creation date: 2019-04-29T10:08:19.573435
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/AS1A05_104T05_9000002860cztM0_level2_bc.evt modeM0/AS1A05_104T05_9000002860cztM0_level2_quad_clean.evt
Size (bytes)714,519,360201,245,760
Size681.4 MB 191.9 MB
Events in quadrant A3,051,6371,345,081
Events in quadrant B3,036,9671,365,406
Events in quadrant C2,936,3741,327,383
Events in quadrant D11,764,5691,200,403

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273820
B0273380
C0274720
D0653450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123951741.403792%
B123951951.573215%
C123952221.791045%
D12395359729.019766%

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 15079 12393 2 2 0.01% 0.02%
B 15079 12392 0 0 0.00% 0.00%
C 15080 12392 0 0 0.00% 0.00%
D 15079 12392 18 18 0.12% 0.15%

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 4 2 72788 442.21 769 758 162.9
A 13 254 10822 61.79 769 758 162.9
A 12 96 7983 44.36 769 758 162.9
B 0 230 39713 271.7 779 764 143.4
B 0 198 11180 72.66 779 764 143.4
B 0 229 8454 53.64 779 764 143.4
C 3 233 23555 130.65 754 753 174.5
C 9 54 11498 61.57 754 753 174.5
C 13 61 4340 20.55 754 753 174.5
D 10 66 8396636 53048.42 683 662 158.3
D 1 52 425867 2686.58 683 662 158.3
D 11 176 138591 871.48 683 662 158.3

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