ASTROSAT CZTI

Data Quality Report

Orbit 20200404_T03_183T01_9000003606_level2

Creation date: 2025-12-10T12:12:25.706758
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/AS1T03_183T01_9000003606cztM0_level2.fits modeM0/AS1T03_183T01_9000003606cztM0_level2_quad_clean.evt
Size (bytes)5,723,035,2006,919,519,680
Size5.3 GB 6.4 GB
Events in quadrant A35,598,92244,980,851
Events in quadrant B33,525,58244,020,740
Events in quadrant C34,302,73042,224,671
Events in quadrant D29,452,02037,939,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013129940
B014410510
C013120830
D016532270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120100
B0120100
C0120100
D0120100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09660
B09670
C09670
D09670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A590338119112.017658%
B590338299315.070146%
C590338166932.827702%
D590337283154.796413%

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 691051 590309 0 0 0.00% 0.00%
B 691049 589802 0 0 0.00% 0.00%
C 691049 590271 0 0 0.00% 0.00%
D 691049 589735 0 0 0.00% 0.00%

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 0 29 34294 11.19 9281 8744 2282.7
A 7 110 28727 8.75 9281 8744 2282.7
A 9 19 26571 7.81 9281 8744 2282.7
B 2 9 26893 10.87 8888 8529 1689.5
B 2 8 22712 8.39 8888 8529 1689.5
B 14 254 21863 7.89 8888 8529 1689.5
C 12 241 24389 6.95 9062 8500 2285.4
C 3 126 22962 6.33 9062 8500 2285.4
C 9 209 22926 6.31 9062 8500 2285.4
D 3 14 21939 6.43 8404 7658 2221.3
D 15 46 21007 6.01 8404 7658 2221.3
D 6 231 20723 5.88 8404 7658 2221.3

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