ASTROSAT CZTI

Data Quality Report

Orbit 20210720_A10_094T30_9000004566_level2

Creation date: 2021-07-22T13:33:23.571488
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_094T30_9000004566cztM0_level2_bc.evt modeM0/AS1A10_094T30_9000004566cztM0_level2_quad_clean.evt
Size (bytes)1,693,975,680661,394,880
Size1.6 GB 630.8 MB
Events in quadrant A7,401,5274,761,366
Events in quadrant B20,376,5113,742,533
Events in quadrant C7,742,2114,713,889
Events in quadrant D13,572,6314,589,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0672950
B01391170
C0703500
D0882850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06600
B06600
C06600
D06600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A323731340.413925%
B32373949129.317641%
C323737072.183919%
D323736662.057270%

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 39924 32372 0 0 0.00% 0.00%
B 39924 32242 625 625 1.57% 1.94%
C 39924 32374 9 9 0.02% 0.03%
D 39924 32374 84 84 0.21% 0.26%

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 57396 137.32 1913 1893 404.2
A 12 16 17098 37.62 1913 1893 404.2
A 12 194 14382 30.9 1913 1893 404.2
B 12 1 7231373 25438.13 1522 1495 284.2
B 6 159 6885077 24219.7 1522 1495 284.2
B 4 80 216970 758.14 1522 1495 284.2
C 10 22 276855 614.36 1884 1887 447.6
C 3 233 89853 196.54 1884 1887 447.6
C 2 114 60551 131.07 1884 1887 447.6
D 8 195 3754852 8280.57 1900 1863 453.2
D 12 218 1277592 2814.76 1900 1863 453.2
D 5 233 540373 1188.16 1900 1863 453.2

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