ASTROSAT CZTI

Data Quality Report

Orbit 20200804_A09_079T03_9000003790_level2

Creation date: 2021-01-09T12:53:03.089586
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/AS1A09_079T03_9000003790cztM0_level2_bc.evt modeM0/AS1A09_079T03_9000003790cztM0_level2_quad_clean.evt
Size (bytes)10,814,808,9604,029,984,000
Size10.1 GB 3.8 GB
Events in quadrant A69,798,07425,550,400
Events in quadrant B65,310,17626,408,157
Events in quadrant C78,067,98625,456,079
Events in quadrant D94,557,52224,737,910

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059120
B059100
C059120
D059120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06335360
B06191160
C06805530
D07199640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04670
B04670
C04670
D04670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29085850551.737961%
B29085447021.616619%
C290859119654.113677%
D290853109773.774071%

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 336917 290871 188 188 0.06% 0.06%
B 336917 290865 37 37 0.01% 0.01%
C 336917 290876 259 259 0.08% 0.09%
D 336917 290866 2021 2021 0.60% 0.69%

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 0 13 9524194 2834.43 15524 15259 3354.8
A 13 254 459103 132.3 15524 15259 3354.8
A 6 16 157599 42.43 15524 15259 3354.8
B 5 172 2085253 699.42 15853 15467 2959.3
B 0 230 566615 186.24 15853 15467 2959.3
B 7 219 531761 174.47 15853 15467 2959.3
C 4 254 7687907 2141.91 15101 15042 3582.3
C 3 233 6431566 1791.2 15101 15042 3582.3
C 2 16 5413617 1507.03 15101 15042 3582.3
D 1 52 29967692 8560.22 15148 14716 3499.1
D 12 233 2533082 719.72 15148 14716 3499.1
D 2 234 1255464 354.59 15148 14716 3499.1

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