ASTROSAT CZTI

Data Quality Report

Orbit 20690

Creation date: 2024-06-27T18:18:24.828117
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/AS1A05_229T02_9000003060_20690cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20690cztM0_level2_quad_clean.evt
Size (bytes)587,664,000113,463,360
Size560.4 MB 108.2 MB
Events in quadrant A3,646,960741,717
Events in quadrant B3,932,405742,476
Events in quadrant C3,705,115716,818
Events in quadrant D5,976,444685,161

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161992
B0169462
C0162322
D0230542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7922210.265085%
B7922901.136077%
C7922750.946731%
D79223083.887907%

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 8727 7924 0 0 0.00% 0.00%
B 8727 7924 18 18 0.21% 0.23%
C 8727 7924 0 0 0.00% 0.00%
D 8727 7924 222 222 2.54% 2.80%

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 0 226 8159 37.86 948 926 191.0
A 3 137 7743 35.68 948 926 191.0
A 12 194 6726 30.36 948 926 191.0
B 7 220 143085 781.98 944 921 181.8
B 0 229 32173 171.9 944 921 181.8
B 0 190 21970 115.78 944 921 181.8
C 14 238 140841 653.54 903 907 214.1
C 3 233 12661 54.9 903 907 214.1
C 8 128 11826 51.0 903 907 214.1
D 1 52 1788896 8108.18 901 871 220.5
D 5 222 426979 1932.28 901 871 220.5
D 1 20 110841 498.68 901 871 220.5

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