ASTROSAT CZTI

Data Quality Report

Orbit 20190205_A05_194T05_9000002702_level2

Creation date: 2019-02-06T12:39:19.398245
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_9000002702cztM0_level2_bc.evt modeM0/AS1A05_194T05_9000002702cztM0_level2_quad_clean.evt
Size (bytes)650,085,120218,926,080
Size620.0 MB 208.8 MB
Events in quadrant A3,647,8341,386,378
Events in quadrant B3,618,0231,404,390
Events in quadrant C4,416,0911,352,543
Events in quadrant D6,861,7951,335,965

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0356220
B0357210
C0389020
D0469280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167022461.472877%
B167023051.826129%
C167026914.137229%
D167025143.077476%

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 17742 16704 7 7 0.04% 0.04%
B 17742 16702 1 1 0.01% 0.01%
C 17742 16702 35 35 0.20% 0.21%
D 17742 16703 26 26 0.15% 0.16%

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 275090 1430.92 861 843 191.7
A 4 2 61558 316.79 861 843 191.7
A 0 226 5787 25.8 861 843 191.7
B 7 220 98543 583.24 865 842 167.5
B 0 197 38377 224.07 865 842 167.5
B 0 229 27767 160.73 865 842 167.5
C 4 254 1137730 5817.29 826 819 195.4
C 3 233 32551 162.36 826 819 195.4
C 5 218 25151 124.5 826 819 195.4
D 7 238 2583704 12832.66 849 817 201.3
D 13 187 337056 1670.55 849 817 201.3
D 14 34 108157 533.3 849 817 201.3

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