ASTROSAT CZTI

Data Quality Report

Orbit 46961

Creation date: 2024-06-27T23:29:58.210205
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/AS1A13_070T06_9000006288_46961cztM0_level2.fits modeM0/AS1A13_070T06_9000006288_46961cztM0_level2_quad_clean.evt
Size (bytes)573,192,000128,191,680
Size546.6 MB 122.3 MB
Events in quadrant A7,265,845845,505
Events in quadrant B5,053,221856,689
Events in quadrant C4,117,074851,873
Events in quadrant D4,163,489772,765

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266571
B0206446
C0178891
D0184761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79751922.407524%
B79732893.624733%
C7976750.940321%
D79761682.106319%

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 8105 7976 7 7 0.09% 0.09%
B 8105 7975 41 41 0.51% 0.51%
C 8106 7977 64 64 0.79% 0.80%
D 8106 7977 119 119 1.47% 1.49%

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 10 83 3713244 19830.74 894 871 187.2
A 14 248 60680 319.49 894 871 187.2
A 3 7 11521 56.89 894 871 187.2
B 3 112 1174571 6640.83 888 856 176.7
B 5 255 200849 1131.55 888 856 176.7
B 5 32 45493 252.55 888 856 176.7
C 14 254 450105 2124.32 892 894 211.5
C 15 208 164374 773.1 892 894 211.5
C 12 2 10316 44.56 892 894 211.5
D 13 249 622530 2824.54 881 852 220.1
D 1 52 44765 199.51 881 852 220.1
D 1 47 42707 190.16 881 852 220.1

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