ASTROSAT CZTI

Data Quality Report

Orbit 20210715_A10_053T31_9000004540_level2

Creation date: 2021-07-17T14:16:24.785859
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/AS1A10_053T31_9000004540cztM0_level2_bc.evt modeM0/AS1A10_053T31_9000004540cztM0_level2_quad_clean.evt
Size (bytes)596,975,040132,027,840
Size569.3 MB 125.9 MB
Events in quadrant A2,657,887821,909
Events in quadrant B6,094,930807,212
Events in quadrant C3,377,494765,720
Events in quadrant D5,129,127775,799

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248660
B0371020
C0291150
D0342830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119672131.779895%
B119673873.233893%
C119675995.005432%
D119677526.283948%

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 14002 11967 0 0 0.00% 0.00%
B 14002 11967 0 0 0.00% 0.00%
C 14002 11969 2 2 0.01% 0.02%
D 14002 11965 64 64 0.46% 0.53%

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 13 254 21796 141.91 686 675 148.8
A 5 16 5679 33.62 686 675 148.8
A 0 226 4475 25.53 686 675 148.8
B 6 159 3149875 24413.74 676 661 129.0
B 0 190 169034 1305.28 676 661 129.0
B 4 80 51793 396.39 676 661 129.0
C 3 233 572810 3741.09 642 640 152.9
C 0 10 198318 1292.5 642 640 152.9
C 14 254 58248 376.67 642 640 152.9
D 8 195 1683011 11169.88 660 641 150.6
D 12 233 822507 5456.67 660 641 150.6
D 2 234 49543 324.68 660 641 150.6

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