ASTROSAT CZTI

Data Quality Report

Orbit 45970

Creation date: 2024-06-27T23:18:20.028660
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/AS1A13_017T01_9000006148_45970cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45970cztM0_level2_quad_clean.evt
Size (bytes)567,930,240100,961,280
Size541.6 MB 96.3 MB
Events in quadrant A5,669,439677,907
Events in quadrant B7,333,504590,694
Events in quadrant C2,971,497699,469
Events in quadrant D4,533,270625,177

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211731
B0263311
C0138741
D0179961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66472774.167294%
B6647143321.558598%
C6647811.218595%
D66471952.933654%

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 7057 6647 31 31 0.44% 0.47%
B 7056 6646 1044 1044 14.80% 15.71%
C 7057 6648 6 6 0.09% 0.09%
D 7057 6647 68 68 0.96% 1.02%

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 10 83 2609783 17059.63 734 719 152.9
A 15 223 123808 804.83 734 719 152.9
A 7 3 87470 567.23 734 719 152.9
B 3 112 4616994 34356.53 680 658 134.4
B 12 111 17387 124.5 680 658 134.4
B 11 111 15965 113.92 680 658 134.4
C 14 254 97492 569.29 729 731 170.0
C 5 250 21924 124.69 729 731 170.0
C 12 2 4824 24.08 729 731 170.0
D 11 241 1202513 6577.42 725 701 182.7
D 12 2 311085 1698.71 725 701 182.7
D 2 249 68201 369.42 725 701 182.7

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