ASTROSAT CZTI

Data Quality Report

Orbit 21971

Creation date: 2024-06-27T18:34:42.272699
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/AS1A07_130T01_9000003246_21971cztM0_level2.evt modeM0/AS1A07_130T01_9000003246_21971cztM0_level2_quad_clean.evt
Size (bytes)507,404,160100,702,080
Size483.9 MB 96.0 MB
Events in quadrant A3,509,010668,408
Events in quadrant B3,722,740675,410
Events in quadrant C3,442,279639,587
Events in quadrant D4,265,724627,139

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145421
B0152071
C0141411
D0166841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62931131.795646%
B62941612.557992%
C62941302.065459%
D62941943.082301%

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 7558 6293 2 2 0.03% 0.03%
B 7559 6294 39 39 0.52% 0.62%
C 7559 6294 0 0 0.00% 0.00%
D 7559 6294 82 82 1.08% 1.30%

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 4 2 20453 110.42 902 888 177.2
A 13 254 11135 57.83 902 888 177.2
A 0 226 7895 39.55 902 888 177.2
B 3 64 175697 1071.88 882 864 163.1
B 0 197 67305 407.34 882 864 163.1
B 0 230 32979 196.89 882 864 163.1
C 14 238 135215 688.56 848 856 195.1
C 13 61 5931 26.01 848 856 195.1
C 15 78 2043 6.08 848 856 195.1
D 7 223 367019 1769.14 866 843 207.0
D 1 52 359831 1734.41 866 843 207.0
D 2 136 125873 604.07 866 843 207.0

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