ASTROSAT CZTI

Data Quality Report

Orbit 09541

Creation date: 2024-06-27T15:47:28.774863
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/AS1G07_049T01_9000001352_09541cztM0_level2.evt modeM0/AS1G07_049T01_9000001352_09541cztM0_level2_quad_clean.evt
Size (bytes)483,266,880128,185,920
Size460.9 MB 122.2 MB
Events in quadrant A3,429,105867,498
Events in quadrant B3,450,595865,817
Events in quadrant C3,825,598840,320
Events in quadrant D3,466,854833,269

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146545
B0148784
C0162722
D0149222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6827430.629852%
B6827761.113227%
C68281992.914470%
D6828711.039836%

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 7588 6829 1 1 0.01% 0.01%
B 7588 6829 13 13 0.17% 0.19%
C 7588 6829 133 133 1.75% 1.95%
D 7588 6829 48 48 0.63% 0.70%

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 1 162 160699 987.46 798 782 161.9
A 1 178 58495 356.37 798 782 161.9
A 1 161 58211 354.61 798 782 161.9
B 4 80 248904 1660.22 798 780 149.5
B 15 204 31686 206.79 798 780 149.5
B 0 214 24803 160.74 798 780 149.5
C 4 254 858983 4900.42 756 758 175.1
C 13 61 5978 29.8 756 758 175.1
C 14 238 5548 27.35 756 758 175.1
D 8 195 213533 1057.07 760 742 201.3
D 1 52 167353 827.67 760 742 201.3
D 13 104 58447 286.66 760 742 201.3

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