ASTROSAT CZTI

Data Quality Report

Orbit 19883

Creation date: 2024-06-27T18:08:17.184867
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/AS1T03_118T01_9000002962_19883cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19883cztM0_level2_quad_clean.evt
Size (bytes)469,615,68067,265,280
Size447.9 MB 64.1 MB
Events in quadrant A3,346,455404,155
Events in quadrant B3,557,321403,505
Events in quadrant C3,317,054383,787
Events in quadrant D3,546,639378,279

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141962
B0147222
C0139662
D0148852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6698600.895790%
B66981352.015527%
C6697901.343885%
D6697911.358817%

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 7718 6698 0 0 0.00% 0.00%
B 7718 6698 48 48 0.62% 0.72%
C 7717 6697 0 0 0.00% 0.00%
D 7717 6697 43 43 0.56% 0.64%

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 14 238 65665 377.46 850 832 171.8
A 0 226 7261 37.43 850 832 171.8
A 3 137 6756 34.49 850 832 171.8
B 7 220 151609 934.01 840 820 161.4
B 3 64 59594 364.06 840 820 161.4
B 12 111 19127 113.4 840 820 161.4
C 14 238 126572 665.38 809 815 189.0
C 9 221 32930 169.92 809 815 189.0
C 13 61 5619 25.42 809 815 189.0
D 7 238 212406 1064.01 823 799 198.9
D 12 218 103986 518.85 823 799 198.9
D 1 52 52122 258.06 823 799 198.9

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