ASTROSAT CZTI

Data Quality Report

Orbit 39467

Creation date: 2024-06-27T22:04:56.598741
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/AS1A12_044T05_9000005480_39467cztM0_level2.fits modeM0/AS1A12_044T05_9000005480_39467cztM0_level2_quad_clean.evt
Size (bytes)86,794,56014,584,320
Size82.8 MB 13.9 MB
Events in quadrant A993,32993,668
Events in quadrant B485,447102,979
Events in quadrant C1,170,94784,002
Events in quadrant D487,98989,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036272
B020211
C041101
D020451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A927929.924488%
B927111.186624%
C92719621.143474%
D92780.862999%

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 927 927 64 64 6.90% 6.90%
B 927 927 2 2 0.22% 0.22%
C 927 927 146 146 15.75% 15.75%
D 927 927 5 5 0.54% 0.54%

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 15 222 424991 18206.94 105 103 23.3
A 10 83 132920 5691.36 105 103 23.3
A 15 174 19347 824.63 105 103 23.3
B 5 255 35161 1551.3 105 102 22.6
B 8 3 23906 1053.29 105 102 22.6
B 0 230 5034 218.23 105 102 22.6
C 15 208 749686 31218.43 95 95 24.0
C 15 214 40618 1687.65 95 95 24.0
C 9 187 3650 148.04 95 95 24.0
D 12 233 32153 1163.87 104 100 27.5
D 12 227 12527 451.23 104 100 27.5
D 12 0 10685 384.35 104 100 27.5

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