ASTROSAT CZTI

Data Quality Report

Orbit 20895

Creation date: 2024-06-27T18:20:51.922440
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/AS1A06_002T03_9000003080_20895cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20895cztM0_level2_quad_clean.evt
Size (bytes)1,379,134,080212,921,280
Size1.3 GB 203.1 MB
Events in quadrant A8,181,6861,372,495
Events in quadrant B9,039,0271,372,487
Events in quadrant C7,929,9231,340,322
Events in quadrant D15,475,6871,197,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374881935
B0400762121
C0366581886
D0603132861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036016
B036119
C035919
D036020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A169251490.880355%
B169101660.981668%
C169271410.832989%
D1689115639.253449%

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 19880 17063 107 107 0.54% 0.63%
B 19851 17039 46 46 0.23% 0.27%
C 19861 17047 24 24 0.12% 0.14%
D 19818 17017 1657 1657 8.36% 9.74%

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 6 16 395620 967.96 2015 1970 406.7
A 5 16 31446 72.48 2015 1970 406.7
A 0 226 17638 38.53 2015 1970 406.7
B 0 197 397902 1032.19 2008 1959 383.6
B 7 220 355743 922.28 2008 1959 383.6
B 0 182 79420 201.93 2008 1959 383.6
C 14 238 301174 666.44 1927 1938 449.0
C 9 54 91874 200.3 1927 1938 449.0
C 13 61 13427 25.59 1927 1938 449.0
D 1 20 3831610 8397.83 1877 1823 456.0
D 1 52 1757475 3849.73 1877 1823 456.0
D 12 235 1191469 2608.62 1877 1823 456.0

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