ASTROSAT CZTI

Data Quality Report

Orbit 46280

Creation date: 2024-06-27T23:21:12.259842
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_072T01_9000006192_46280cztM0_level2.fits modeM0/AS1A13_072T01_9000006192_46280cztM0_level2_quad_clean.evt
Size (bytes)1,561,181,760286,335,360
Size1.5 GB 273.1 MB
Events in quadrant A15,771,5861,909,684
Events in quadrant B12,951,0261,966,459
Events in quadrant C8,219,9801,965,057
Events in quadrant D19,400,2751,534,715

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0593306
B0514793
C0389043
D0707275

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187593551.892425%
B187605032.681237%
C187601210.644989%
D18759287415.320646%

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 20215 18764 19 19 0.09% 0.10%
B 20215 18763 169 169 0.84% 0.90%
C 20215 18763 62 62 0.31% 0.33%
D 20215 18764 2542 2542 12.57% 13.55%

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 7813912 18858.24 2012 1968 414.2
A 15 14 53894 125.35 2012 1968 414.2
A 7 3 48988 113.51 2012 1968 414.2
B 3 112 3821393 9698.17 2008 1936 393.8
B 5 172 418852 1058.61 2008 1936 393.8
B 5 63 282333 711.97 2008 1936 393.8
C 12 2 386857 822.29 2005 2010 468.0
C 12 250 18759 35.79 2005 2010 468.0
C 13 61 13622 24.81 2005 2010 468.0
D 1 52 5323040 11380.06 1879 1818 467.6
D 3 13 5190518 11096.65 1879 1818 467.6
D 13 249 986785 2106.47 1879 1818 467.6

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