ASTROSAT CZTI

Data Quality Report

Orbit 20200117_C05_005T01_9000003440_level2

Creation date: 2020-01-20T15:25:43.985273
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C05_005T01_9000003440cztM0_level2_bc.evt modeM0/AS1C05_005T01_9000003440cztM0_level2_quad_clean.evt
Size (bytes)2,165,077,440884,687,040
Size2.0 GB 843.7 MB
Events in quadrant A12,698,3145,773,197
Events in quadrant B13,693,3455,867,625
Events in quadrant C13,188,5765,634,805
Events in quadrant D21,939,9095,446,978

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012100
B012100
C012100
D012100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0990
B0990
C0990
D0990

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01243400
B01266980
C01274060
D01551330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594125590.940887%
B594117031.183283%
C5941110411.752201%
D5941122473.782128%

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 69307 59412 5 5 0.01% 0.01%
B 69307 59408 9 9 0.01% 0.02%
C 69307 59408 49 49 0.07% 0.08%
D 69307 59411 421 421 0.61% 0.71%

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 92404 126.51 3271 3223 704.9
A 6 16 70956 96.08 3271 3223 704.9
A 0 226 20956 25.16 3271 3223 704.9
B 4 206 598394 964.19 3306 3233 617.3
B 3 64 79052 122.83 3306 3233 617.3
B 4 200 74886 116.08 3306 3233 617.3
C 10 9 690455 922.34 3165 3160 745.2
C 0 207 85842 110.96 3165 3160 745.2
C 7 247 83797 108.21 3165 3160 745.2
D 1 52 3226468 4372.69 3194 3093 737.2
D 7 238 2907083 3939.43 3194 3093 737.2
D 12 233 1451261 1964.52 3194 3093 737.2

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