ASTROSAT CZTI

Data Quality Report

Orbit 03936

Creation date: 2024-06-27T14:35:26.772972
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/AS1G05_172T01_9000000502_03936cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03936cztM0_level2_quad_clean.evt
Size (bytes)535,524,48056,923,200
Size510.7 MB 54.3 MB
Events in quadrant A3,394,892326,658
Events in quadrant B4,249,984333,575
Events in quadrant C2,926,934329,634
Events in quadrant D5,222,699296,499

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139753
B0166132
C0128382
D0198172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6261881.405526%
B62612393.817282%
C6261280.447213%
D62613435.478358%

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 7566 6262 29 29 0.38% 0.46%
B 7566 6262 72 72 0.95% 1.15%
C 7566 6262 0 0 0.00% 0.00%
D 7566 6262 275 275 3.63% 4.39%

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 8 15 273753 1751.91 764 748 155.8
A 0 149 74928 476.02 764 748 155.8
A 0 118 70272 446.14 764 748 155.8
B 3 0 1180350 8192.57 773 757 144.0
B 15 204 25690 173.17 773 757 144.0
B 4 81 18239 121.42 773 757 144.0
C 10 65 18361 103.0 742 747 171.0
C 7 222 6763 35.18 742 747 171.0
C 13 61 6173 31.73 742 747 171.0
D 9 82 1836825 10575.99 717 697 173.6
D 2 232 376304 2163.47 717 697 173.6
D 13 223 140360 804.45 717 697 173.6

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
Veto Counter