ASTROSAT CZTI

Data Quality Report

Orbit 45711

Creation date: 2024-06-27T23:15:18.731677
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_028T01_9000006122_45711cztM0_level2.fits modeM0/AS1A13_028T01_9000006122_45711cztM0_level2_quad_clean.evt
Size (bytes)669,121,920139,867,200
Size638.1 MB 133.4 MB
Events in quadrant A7,809,892919,887
Events in quadrant B5,745,190943,932
Events in quadrant C5,336,028929,376
Events in quadrant D5,207,054840,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291171
B0229721
C0216673
D0215921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86624014.629416%
B86633654.213321%
C8662941.085200%
D86622773.197876%

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 8702 8663 28 28 0.32% 0.32%
B 8703 8663 35 35 0.40% 0.40%
C 8702 8662 23 23 0.26% 0.27%
D 8702 8663 207 207 2.38% 2.39%

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 3703143 17289.55 1017 993 214.1
A 15 174 43883 200.3 1017 993 214.1
A 2 79 38705 176.12 1017 993 214.1
B 3 112 1408543 7008.98 1012 979 200.8
B 12 18 80511 396.03 1012 979 200.8
B 5 172 68744 337.44 1012 979 200.8
C 9 54 1276944 5460.02 990 993 233.7
C 14 254 117912 500.32 990 993 233.7
C 3 233 30812 127.6 990 993 233.7
D 13 249 615093 2437.84 990 956 251.9
D 2 249 268094 1060.42 990 956 251.9
D 5 171 166432 656.86 990 956 251.9

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