ASTROSAT CZTI

Data Quality Report

Orbit 47576

Creation date: 2024-07-15T19:44:37.534636
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/AS1C09_002T01_9000006334_47576cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47576cztM0_level2_quad_clean.evt
Size (bytes)688,415,04092,471,040
Size656.5 MB 88.2 MB
Events in quadrant A6,951,823675,664
Events in quadrant B2,896,421722,386
Events in quadrant C2,647,503695,494
Events in quadrant D12,531,349295,268

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250251
B0124691
C0120271
D0412991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58904287.266553%
B5891731.239178%
C5890420.713073%
D5890332356.417657%

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 7145 5890 210 210 2.94% 3.57%
B 7146 5891 15 15 0.21% 0.25%
C 7145 5890 1 1 0.01% 0.02%
D 7145 5890 3508 3508 49.10% 59.56%

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 3441526 24621.62 673 658 139.7
A 9 191 793215 5671.26 673 658 139.7
A 13 248 105522 750.37 673 658 139.7
B 0 200 68267 513.63 683 663 131.6
B 5 32 46794 350.49 683 663 131.6
B 0 190 35460 264.38 683 663 131.6
C 12 250 25421 160.56 668 673 154.1
C 0 207 8529 50.97 668 673 154.1
C 3 233 5972 34.38 668 673 154.1
D 2 165 8227031 69719.04 462 447 118.0
D 6 112 1792821 15190.1 462 447 118.0
D 2 249 320274 2710.49 462 447 118.0

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