ASTROSAT CZTI

Data Quality Report

Orbit 20181001_A05_182T02_9000002392_level2

Creation date: 2018-10-03T15:48:09.683753
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_182T02_9000002392cztM0_level2_bc.evt modeM0/AS1A05_182T02_9000002392cztM0_level2_quad_clean.evt
Size (bytes)830,416,320308,237,760
Size791.9 MB 294.0 MB
Events in quadrant A4,486,8162,110,471
Events in quadrant B9,996,2031,978,313
Events in quadrant C4,171,9912,019,088
Events in quadrant D5,267,1291,992,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385410
B0622210
C0379980
D0410730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179362071.154103%
B17936263214.674398%
C179362531.410571%
D179362301.282337%

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 21906 17936 1 1 0.00% 0.01%
B 21906 17933 220 220 1.00% 1.23%
C 21906 17936 0 0 0.00% 0.00%
D 21907 17937 19 19 0.09% 0.11%

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 15 174 247268 1095.69 1047 1033 224.7
A 9 143 200678 888.37 1047 1033 224.7
A 14 4 15895 66.13 1047 1033 224.7
B 3 112 5581993 30304.2 985 967 184.2
B 0 198 154644 834.44 985 967 184.2
B 4 216 129349 697.1 985 967 184.2
C 3 233 285908 1242.34 989 987 229.3
C 0 207 79177 340.93 989 987 229.3
C 7 247 9630 37.69 989 987 229.3
D 1 52 1029533 4454.85 1018 986 230.9
D 10 70 193104 832.1 1018 986 230.9
D 15 0 73637 314.66 1018 986 230.9

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