ASTROSAT CZTI

Data Quality Report

Orbit 44857

Creation date: 2024-06-27T23:07:17.672207
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_017T01_9000006028_44857cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44857cztM0_level2_quad_clean.evt
Size (bytes)497,522,880120,951,360
Size474.5 MB 115.3 MB
Events in quadrant A5,491,698797,440
Events in quadrant B3,617,299824,622
Events in quadrant C3,605,471796,145
Events in quadrant D5,119,051721,559

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227950
B0162450
C0163490
D0204290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75101922.556591%
B75092102.796644%
C7509570.759089%
D75092212.943135%

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 7510 7510 14 14 0.19% 0.19%
B 7509 7509 11 11 0.15% 0.15%
C 7509 7509 17 17 0.23% 0.23%
D 7509 7509 153 153 2.04% 2.04%

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 2049979 11146.88 871 850 183.8
A 13 248 63367 340.08 871 850 183.8
A 3 137 10696 53.56 871 850 183.8
B 5 255 61391 346.0 869 840 175.0
B 5 172 29304 162.65 869 840 175.0
B 0 190 24627 135.92 869 840 175.0
C 1 3 118186 572.72 856 861 204.9
C 12 250 72635 350.36 856 861 204.9
C 14 254 35297 168.1 856 861 204.9
D 13 174 587377 2735.01 845 817 214.5
D 5 235 332841 1548.16 845 817 214.5
D 1 52 229931 1068.31 845 817 214.5

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