ASTROSAT CZTI

Data Quality Report

Orbit 19091

Creation date: 2024-06-27T17:58:56.646626
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_046T01_9000002834_19091cztM0_level2.evt modeM0/AS1A05_046T01_9000002834_19091cztM0_level2_quad_clean.evt
Size (bytes)437,120,640107,300,160
Size416.9 MB 102.3 MB
Events in quadrant A3,077,987707,685
Events in quadrant B3,312,188735,807
Events in quadrant C3,305,456705,991
Events in quadrant D3,129,545675,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129151
B0136341
C0135871
D0132221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6083170.279467%
B6083641.052112%
C6083821.348019%
D6082260.427491%

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 7413 6084 0 0 0.00% 0.00%
B 7413 6084 10 10 0.13% 0.16%
C 7413 6084 2 2 0.03% 0.03%
D 7412 6083 12 12 0.16% 0.20%

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 13 254 9065 51.5 797 781 160.8
A 0 226 7012 38.74 797 781 160.8
A 3 137 5936 32.05 797 781 160.8
B 3 112 50282 330.31 807 789 149.8
B 7 220 38865 254.12 807 789 149.8
B 0 189 24368 157.36 807 789 149.8
C 14 238 123125 671.33 781 791 182.2
C 3 233 122331 666.97 781 791 182.2
C 0 207 13970 72.32 781 791 182.2
D 1 52 85882 452.89 780 758 188.0
D 7 96 48106 251.91 780 758 188.0
D 11 176 44858 234.63 780 758 188.0

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