ASTROSAT CZTI

Data Quality Report

Orbit 20151120_T01_001T01_9000000110_level2

Creation date: 2017-05-17T12:01:42.980797
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/AS1T01_001T01_9000000110cztM0_level2.evt modeM0/AS1T01_001T01_9000000110cztM0_level2_quad_clean.evt
Size (bytes)1,832,476,672183,614,400
Size1.7 GB 175.1 MB
Events in quadrant A15,535,9381,188,121
Events in quadrant B15,909,0151,196,322
Events in quadrant C14,704,0631,174,976
Events in quadrant D14,346,2661,142,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0549590
B0560620
C0524950
D0514550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124241881.513200%
B124241411.134900%
C12424550.442692%
D124241381.110753%

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 12489 12426 848 848 6.79% 6.82%
B 12488 12425 840 840 6.73% 6.76%
C 12489 12426 506 506 4.05% 4.07%
D 12489 12426 589 589 4.72% 4.74%

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 256556 263.12 3956 3982 959.9
A 12 236 43811 41.49 3956 3982 959.9
A 10 133 39622 37.13 3956 3982 959.9
B 15 22 96824 95.86 4087 4100 967.3
B 0 23 79172 77.61 4087 4100 967.3
B 8 234 64230 62.16 4087 4100 967.3
C 9 83 103570 96.69 3688 3816 1031.7
C 15 241 78852 72.73 3688 3816 1031.7
C 3 111 68510 62.71 3688 3816 1031.7
D 1 4 544247 476.86 3611 3741 1133.5
D 13 25 190380 164.66 3611 3741 1133.5
D 9 41 26771 20.32 3611 3741 1133.5

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter