ASTROSAT CZTI

Data Quality Report

Orbit 20190922_T03_138T03_9000003178_level2

Creation date: 2019-09-23T10:30:02.061651
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/AS1T03_138T03_9000003178cztM0_level2_bc.evt modeM0/AS1T03_138T03_9000003178cztM0_level2_quad_clean.evt
Size (bytes)506,842,560183,150,720
Size483.4 MB 174.7 MB
Events in quadrant A3,311,0461,176,655
Events in quadrant B3,453,2691,210,711
Events in quadrant C3,142,0951,121,707
Events in quadrant D4,472,5991,061,228

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02900
B02900
C02900
D02900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297050
B0305010
C0297500
D0339750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14146440.311042%
B14146550.388802%
C141461080.763467%
D141463062.163156%

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 17936 14147 1 1 0.01% 0.01%
B 17936 14146 0 0 0.00% 0.00%
C 17936 14146 0 0 0.00% 0.00%
D 17936 14146 19 19 0.11% 0.13%

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 12 96 70081 384.77 841 827 180.0
A 13 254 19142 101.76 841 827 180.0
A 0 226 5463 25.76 841 827 180.0
B 0 230 91090 567.1 857 843 159.1
B 0 190 33987 208.27 857 843 159.1
B 0 229 16495 98.36 857 843 159.1
C 0 239 37854 201.62 799 800 183.8
C 3 233 25669 135.32 799 800 183.8
C 4 175 9198 45.7 799 800 183.8
D 1 52 768258 4234.86 799 776 181.2
D 14 35 280663 1544.38 799 776 181.2
D 7 38 104079 570.01 799 776 181.2

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