ASTROSAT CZTI

Data Quality Report

Orbit 20190418_A05_007T06_9000002844_level2

Creation date: 2025-11-29T11:39:47.781785
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/AS1A05_007T06_9000002844cztM0_level2.fits modeM0/AS1A05_007T06_9000002844cztM0_level2_quad_clean.evt
Size (bytes)489,614,400509,518,080
Size466.9 MB 485.9 MB
Events in quadrant A2,958,5823,048,046
Events in quadrant B2,872,1403,102,644
Events in quadrant C2,927,2263,008,875
Events in quadrant D2,546,4342,748,148

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010420
B010420
C010420
D010420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0670
B0670
C0670
D0670

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01061710
B01064680
C01224920
D01171790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A513665341.039598%
B513665971.162247%
C513669801.907877%
D5136612752.482187%

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 57871 51363 0 0 0.00% 0.00%
B 57871 51365 0 0 0.00% 0.00%
C 57871 51365 0 0 0.00% 0.00%
D 57871 51347 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 2792 10.73 770 722 192.8
A 7 110 2395 8.68 770 722 192.8
A 0 30 2223 7.78 770 722 192.8
B 2 9 2305 10.62 758 722 149.1
B 2 8 1984 8.46 758 722 149.1
B 3 17 1931 8.11 758 722 149.1
C 1 80 2143 7.19 771 723 197.4
C 1 81 2133 7.14 771 723 197.4
C 12 241 2055 6.75 771 723 197.4
D 3 14 1948 6.64 725 661 193.9
D 10 190 1933 6.56 725 661 193.9
D 6 67 1862 6.19 725 661 193.9

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