ASTROSAT CZTI

Data Quality Report

Orbit 53548

Creation date: 2025-08-22T12:36:59.334625
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/AS1A14_004T05_9000006502_53548cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53548cztM0_level2_quad_clean.evt
Size (bytes)786,957,120101,139,840
Size750.5 MB 96.5 MB
Events in quadrant A7,592,151614,036
Events in quadrant B3,932,340784,362
Events in quadrant C10,023,178512,996
Events in quadrant D6,984,723613,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279681
B0172110
C0351520
D0261140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7722150319.463869%
B7723450.582675%
C7723225829.237343%
D772386811.239156%

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 7722 7722 1268 1268 16.42% 16.42%
B 7723 7723 33 33 0.43% 0.43%
C 7723 7723 2070 2070 26.80% 26.80%
D 7723 7723 891 891 11.54% 11.54%

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 3 63 3923983 21053.66 747 730 186.3
A 15 174 394432 2112.75 747 730 186.3
A 3 62 173391 926.56 747 730 186.3
B 5 185 145922 838.3 814 786 173.1
B 0 213 98157 562.41 814 786 173.1
B 12 18 86389 494.44 814 786 173.1
C 15 224 5085120 27050.01 674 669 188.0
C 1 241 790087 4199.82 674 669 188.0
C 15 147 506946 2693.47 674 669 188.0
D 15 94 1847681 8370.51 769 733 220.6
D 13 153 1107716 5016.93 769 733 220.6
D 7 70 150945 680.77 769 733 220.6

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter