ASTROSAT CZTI

Data Quality Report

Orbit 20181222_A05_194T05_9000002592_level2

Creation date: 2018-12-24T10:27:22.236639
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_194T05_9000002592cztM0_level2_bc.evt modeM0/AS1A05_194T05_9000002592cztM0_level2_quad_clean.evt
Size (bytes)2,003,284,800696,288,960
Size1.9 GB 664.0 MB
Events in quadrant A11,507,4864,370,923
Events in quadrant B12,003,7884,452,839
Events in quadrant C11,643,8534,284,293
Events in quadrant D21,714,5864,158,343

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011320
B011320
C011320
D011320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150920
B01166440
C01155210
D01490950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A557523790.679796%
B557525390.966781%
C557526061.086957%
D5575219733.538886%

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 63897 55754 4 4 0.01% 0.01%
B 63897 55753 9 9 0.01% 0.02%
C 63897 55754 3 3 0.00% 0.01%
D 63897 55753 463 463 0.72% 0.83%

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 15 174 204683 316.24 2940 2883 638.1
A 0 226 19339 25.79 2940 2883 638.1
A 12 194 19231 25.62 2940 2883 638.1
B 0 230 138935 246.16 2954 2878 552.7
B 7 220 137664 243.86 2954 2878 552.7
B 0 189 85687 149.82 2954 2878 552.7
C 5 218 468684 705.73 2839 2824 660.1
C 3 233 111422 164.51 2839 2824 660.1
C 5 219 69039 100.31 2839 2824 660.1
D 1 52 4447579 6331.17 2858 2765 702.1
D 11 176 3000369 4269.77 2858 2765 702.1
D 7 238 1314967 1869.09 2858 2765 702.1

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