ASTROSAT CZTI

Data Quality Report

Orbit 20210407_A10_102T10_9000004282_level2

Creation date: 2021-04-16T09:36:31.501081
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_102T10_9000004282cztM0_level2_bc.evt modeM0/AS1A10_102T10_9000004282cztM0_level2_quad_clean.evt
Size (bytes)3,623,495,0401,066,138,560
Size3.4 GB 1016.7 MB
Events in quadrant A15,773,2107,127,489
Events in quadrant B35,369,4617,046,621
Events in quadrant C29,446,8926,690,929
Events in quadrant D24,353,4496,585,915

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014400
B014400
C014400
D014400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01491680
B02147410
C01978840
D01753090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A706308681.228940%
B7063015362.174713%
C7063027773.931757%
D7063018402.605125%

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 81756 70633 2 2 0.00% 0.00%
B 81756 70635 0 0 0.00% 0.00%
C 81756 70632 16 16 0.02% 0.02%
D 81756 70630 284 284 0.35% 0.40%

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 8 192 166242 191.13 4017 3967 849.0
A 13 254 122795 139.96 4017 3967 849.0
A 1 113 32867 34.04 4017 3967 849.0
B 6 159 19724704 26141.07 3988 3902 754.4
B 0 190 225125 293.24 3988 3902 754.4
B 0 230 41764 50.19 3988 3902 754.4
C 3 233 14511782 16279.45 3781 3779 891.2
C 10 22 248088 274.14 3781 3779 891.2
C 2 114 137362 149.89 3781 3779 891.2
D 8 195 3899526 4403.39 3889 3780 884.7
D 7 80 2834675 3199.78 3889 3780 884.7
D 2 250 510148 572.35 3889 3780 884.7

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