ASTROSAT CZTI

Data Quality Report

Orbit 08906

Creation date: 2024-06-27T15:38:49.708446
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_092T01_9000001240_08906cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08906cztM0_level2_quad_clean.evt
Size (bytes)615,672,000108,630,720
Size587.2 MB 103.6 MB
Events in quadrant A4,986,016693,659
Events in quadrant B4,122,692703,378
Events in quadrant C3,443,637690,372
Events in quadrant D5,569,531664,492

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199203
B0174392
C0159422
D0217332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77352693.477699%
B77351712.210730%
C7735270.349063%
D77352633.400129%

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 8440 7738 169 169 2.00% 2.18%
B 8440 7738 64 64 0.76% 0.83%
C 8440 7738 0 0 0.00% 0.00%
D 8440 7738 263 263 3.12% 3.40%

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 1073850 5802.32 907 887 184.9
A 5 16 386877 2087.34 907 887 184.9
A 15 174 17559 90.16 907 887 184.9
B 0 219 262724 1476.8 915 892 177.3
B 10 16 173266 972.24 915 892 177.3
B 0 214 28547 155.98 915 892 177.3
C 13 61 6670 28.32 878 879 204.5
C 3 233 6365 26.83 878 879 204.5
C 9 68 5493 22.56 878 879 204.5
D 12 233 713621 3050.49 870 847 233.7
D 1 52 684347 2925.21 870 847 233.7
D 7 71 411901 1759.21 870 847 233.7

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