ASTROSAT CZTI

Data Quality Report

Orbit 20190519_A05_221T01_9000002936_level2

Creation date: 2019-05-20T14:55:33.528279
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/AS1A05_221T01_9000002936cztM0_level2_bc.evt modeM0/AS1A05_221T01_9000002936cztM0_level2_quad_clean.evt
Size (bytes)1,186,473,600424,373,760
Size1.1 GB 404.7 MB
Events in quadrant A7,323,3472,726,576
Events in quadrant B8,101,7492,792,624
Events in quadrant C7,566,7942,687,498
Events in quadrant D10,744,8532,438,022

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0678500
B0712190
C0695530
D0870480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0730
D0730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06540
B06540
C06540
D06540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A321392080.647189%
B321395051.571300%
C321393831.191699%
D3213925037.788046%

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 39464 32139 4 4 0.01% 0.01%
B 39464 32137 13 13 0.03% 0.04%
C 39464 32136 1 1 0.00% 0.00%
D 39464 32125 497 497 1.26% 1.55%

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 5 16 246797 633.52 1827 1792 386.7
A 11 29 47878 119.17 1827 1792 386.7
A 13 254 16931 39.15 1827 1792 386.7
B 3 112 570809 1677.7 1847 1804 339.2
B 4 216 123653 359.27 1847 1804 339.2
B 3 64 82653 238.38 1847 1804 339.2
C 3 233 470864 1123.12 1783 1781 417.7
C 9 221 100214 235.68 1783 1781 417.7
C 8 208 70524 164.59 1783 1781 417.7
D 1 52 2114644 5418.51 1716 1661 390.0
D 1 20 906458 2320.25 1716 1661 390.0
D 7 38 569430 1455.98 1716 1661 390.0

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