ASTROSAT CZTI

Data Quality Report

Orbit 46302

Creation date: 2024-06-27T23:21:28.594160
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A13_072T02_9000006194_46302cztM0_level2.fits modeM0/AS1A13_072T02_9000006194_46302cztM0_level2_quad_clean.evt
Size (bytes)498,211,200112,896,000
Size475.1 MB 107.7 MB
Events in quadrant A6,438,618742,127
Events in quadrant B4,158,511781,760
Events in quadrant C3,188,604747,047
Events in quadrant D4,132,664677,020

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235882
B0167502
C0141012
D0169312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67503755.555556%
B67501992.948148%
C67501101.629630%
D67512423.584654%

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 7725 6751 18 18 0.23% 0.27%
B 7725 6751 27 27 0.35% 0.40%
C 7725 6751 7 7 0.09% 0.10%
D 7726 6752 110 110 1.42% 1.63%

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 10 83 2864374 17354.24 790 774 165.0
A 15 223 493090 2983.58 790 774 165.0
A 9 191 15134 87.03 790 774 165.0
B 3 112 717090 4620.54 785 760 155.0
B 4 171 237576 1527.53 785 760 155.0
B 5 255 47430 301.03 785 760 155.0
C 12 2 78987 419.92 788 792 186.2
C 14 67 10287 50.99 788 792 186.2
C 12 250 9342 45.91 788 792 186.2
D 1 52 795855 4054.02 783 760 196.1
D 13 249 193535 982.92 783 760 196.1
D 13 171 73435 370.55 783 760 196.1

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