ASTROSAT CZTI

Data Quality Report

Orbit 20210705_A10_103T02_9000004514_level2

Creation date: 2021-07-19T14:49:24.443474
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_103T02_9000004514cztM0_level2_bc.evt modeM0/AS1A10_103T02_9000004514cztM0_level2_quad_clean.evt
Size (bytes)2,074,677,120528,966,720
Size1.9 GB 504.5 MB
Events in quadrant A7,850,8013,481,960
Events in quadrant B21,560,2493,288,236
Events in quadrant C8,211,0853,353,488
Events in quadrant D22,563,3783,225,217

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07960
B07960
C07960
D07960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0792080
B01317430
C0813880
D01263550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A388961730.444776%
B3889129077.474737%
C389036061.557720%
D3889820105.167361%

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 42306 38761 0 0 0.00% 0.00%
B 42306 38756 47 47 0.11% 0.12%
C 42306 38760 4 4 0.01% 0.01%
D 42305 38754 539 539 1.27% 1.39%

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 65448 142.79 2033 1999 444.4
A 0 226 12744 24.18 2033 1999 444.4
A 12 194 12030 22.57 2033 1999 444.4
B 6 159 10240676 27153.99 1972 1926 377.1
B 4 80 3261008 8643.35 1972 1926 377.1
B 0 190 195817 514.21 1972 1926 377.1
C 10 22 268417 570.67 1960 1956 466.9
C 4 175 138662 292.78 1960 1956 466.9
C 0 10 109846 231.07 1960 1956 466.9
D 8 195 11605912 24418.93 1942 1891 475.2
D 12 79 2854490 6002.87 1942 1891 475.2
D 2 250 275830 576.46 1942 1891 475.2

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