ASTROSAT CZTI

Data Quality Report

Orbit 34399

Creation date: 2022-02-07T09:53:50.664964
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/AS1A05_085T01_9000004910_34399cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34399cztM0_level2_quad_clean.evt
Size (bytes)674,818,56073,854,720
Size643.6 MB 70.4 MB
Events in quadrant A2,991,038468,836
Events in quadrant B4,185,813464,863
Events in quadrant C3,393,984466,994
Events in quadrant D9,426,313381,219

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131533
B0167322
C0137692
D0326662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6497110.169309%
B64972824.340465%
C6497520.800369%
D6497188428.997999%

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 9124 6499 2 2 0.02% 0.03%
B 9124 6499 177 177 1.94% 2.72%
C 9124 6499 36 36 0.39% 0.55%
D 9124 6498 1760 1760 19.29% 27.09%

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 36237 234.39 752 735 151.5
A 9 143 19146 121.55 752 735 151.5
A 13 6 13688 85.52 752 735 151.5
B 5 172 1013093 7076.75 740 721 143.1
B 5 200 87495 606.57 740 721 143.1
B 0 190 87487 606.52 740 721 143.1
C 15 214 270083 1594.09 727 732 169.0
C 15 159 98322 577.56 727 732 169.0
C 0 10 83851 491.92 727 732 169.0
D 7 223 2674333 16684.48 661 641 160.3
D 2 249 1973900 12313.61 661 641 160.3
D 8 195 1148642 7163.8 661 641 160.3

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