ASTROSAT CZTI

Data Quality Report

Orbit 32159

Creation date: 2024-06-27T20:37:08.650080
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/AS1A09_131T01_9000004690_32159cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32159cztM0_level2_quad_clean.evt
Size (bytes)601,853,76094,769,280
Size574.0 MB 90.4 MB
Events in quadrant A3,285,014605,622
Events in quadrant B5,518,146605,708
Events in quadrant C3,552,201605,577
Events in quadrant D5,420,762588,191

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141992
B0213882
C0149172
D0207612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6667470.704965%
B66671712.564872%
C66672163.239838%
D66673535.294735%

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 7702 6668 0 0 0.00% 0.00%
B 7702 6668 44 44 0.57% 0.66%
C 7702 6668 40 40 0.52% 0.60%
D 7702 6668 225 225 2.92% 3.37%

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 12 189 82189 491.61 825 806 165.5
A 13 6 15214 87.03 825 806 165.5
A 13 254 12019 67.73 825 806 165.5
B 6 159 1978150 12745.42 817 797 155.1
B 5 172 172210 1104.88 817 797 155.1
B 0 190 60396 384.16 817 797 155.1
C 0 10 222060 1184.16 798 802 186.8
C 14 238 129280 687.61 798 802 186.8
C 4 175 29862 155.53 798 802 186.8
D 8 195 1571670 8311.59 796 775 189.0
D 12 233 508121 2684.36 796 775 189.0
D 14 50 173726 915.08 796 775 189.0

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