ASTROSAT CZTI

Data Quality Report

Orbit 20200523_A07_018T09_9000003682_level2

Creation date: 2021-01-11T06:49:42.185790
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/AS1A07_018T09_9000003682cztM0_level2_bc.evt modeM0/AS1A07_018T09_9000003682cztM0_level2_quad_clean.evt
Size (bytes)2,053,094,400680,621,760
Size1.9 GB 649.1 MB
Events in quadrant A10,860,5604,392,653
Events in quadrant B11,349,1114,456,606
Events in quadrant C16,474,6774,255,356
Events in quadrant D20,123,6264,115,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010080
B010080
C010080
D010080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01045600
B01062090
C01265930
D01366700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494825201.050887%
B494826601.333818%
C4948212272.479690%
D4948224985.048300%

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 59057 49474 0 0 0.00% 0.00%
B 59057 49472 15 15 0.03% 0.03%
C 59057 49473 56 56 0.09% 0.11%
D 59057 49473 378 378 0.64% 0.76%

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 73651 118.53 2798 2753 598.1
A 0 226 17684 24.96 2798 2753 598.1
A 12 194 17203 24.16 2798 2753 598.1
B 0 229 275580 523.16 2820 2758 521.5
B 3 64 107528 200.91 2820 2758 521.5
B 0 190 72075 132.92 2820 2758 521.5
C 7 247 5298112 8464.7 2697 2692 625.6
C 9 54 401477 637.46 2697 2692 625.6
C 7 87 251629 397.92 2697 2692 625.6
D 1 52 6774346 10979.83 2705 2622 616.7
D 8 195 1511763 2446.96 2705 2622 616.7
D 12 235 1140145 1844.41 2705 2622 616.7

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