ASTROSAT CZTI

Data Quality Report

Orbit 31109

Creation date: 2024-06-27T20:23:28.739068
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/AS1A10_109T01_9000004492_31109cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31109cztM0_level2_quad_clean.evt
Size (bytes)586,036,800117,198,720
Size558.9 MB 111.8 MB
Events in quadrant A3,525,524783,571
Events in quadrant B5,553,920782,489
Events in quadrant C3,858,802763,224
Events in quadrant D4,348,136744,716

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147182
B0209223
C0157862
D0176002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6826620.908292%
B68262223.252271%
C68262333.413419%
D68261031.508936%

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 9261 6828 0 0 0.00% 0.00%
B 9261 6828 1 1 0.01% 0.01%
C 9261 6828 10 10 0.11% 0.15%
D 9261 6828 38 38 0.41% 0.56%

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 13 254 11683 58.88 914 901 183.1
A 3 137 9037 44.43 914 901 183.1
A 0 226 7460 35.82 914 901 183.1
B 6 159 1974456 11519.25 903 882 171.3
B 0 183 24096 135.49 903 882 171.3
B 12 111 20903 116.86 903 882 171.3
C 14 238 142390 682.16 890 900 207.4
C 0 10 117993 564.54 890 900 207.4
C 8 229 46042 217.64 890 900 207.4
D 8 195 459269 2162.27 891 869 212.0
D 13 174 329902 1552.05 891 869 212.0
D 12 218 88983 415.63 891 869 212.0

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