ASTROSAT CZTI

Data Quality Report

Orbit 09108

Creation date: 2024-06-27T15:41:23.978092
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/AS1A03_105T01_9000001268_09108cztM0_level2.evt modeM0/AS1A03_105T01_9000001268_09108cztM0_level2_quad_clean.evt
Size (bytes)567,722,88088,551,360
Size541.4 MB 84.4 MB
Events in quadrant A4,311,664536,976
Events in quadrant B4,106,067539,200
Events in quadrant C3,875,131530,116
Events in quadrant D4,354,285515,672

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01772666
B01737756
C01721947
D01840648

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80343564.431168%
B80363694.591837%
C80392903.607414%
D80373364.180664%

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 8692 8056 3 3 0.03% 0.04%
B 8692 8052 4 4 0.05% 0.05%
C 8692 8058 7 7 0.08% 0.09%
D 8692 8054 39 39 0.45% 0.48%

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 8 5 251664 1205.81 1015 990 207.9
A 1 162 87266 415.01 1015 990 207.9
A 15 174 30077 139.92 1015 990 207.9
B 4 173 69374 344.19 1013 986 198.7
B 0 214 62693 310.57 1013 986 198.7
B 12 111 22996 110.77 1013 986 198.7
C 14 234 33482 139.61 984 990 232.7
C 13 61 7425 27.65 984 990 232.7
C 10 22 3300 9.93 984 990 232.7
D 1 52 415433 1689.03 981 955 245.4
D 6 225 57427 230.13 981 955 245.4
D 7 71 42038 167.42 981 955 245.4

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