ASTROSAT CZTI

Data Quality Report

Orbit 21178

Creation date: 2024-06-27T18:24:29.488426
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/AS1A05_062T01_9000003132_21178cztM0_level2.evt modeM0/AS1A05_062T01_9000003132_21178cztM0_level2_quad_clean.evt
Size (bytes)543,375,36090,184,320
Size518.2 MB 86.0 MB
Events in quadrant A3,063,026583,496
Events in quadrant B3,376,148599,939
Events in quadrant C3,201,535577,478
Events in quadrant D6,382,876524,734

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132922
B0141032
C0134682
D0233092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6388210.328741%
B6388540.845335%
C6388691.080150%
D63875408.454674%

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 7558 6389 1 1 0.01% 0.02%
B 7558 6389 13 13 0.17% 0.20%
C 7558 6389 9 9 0.12% 0.14%
D 7557 6388 530 530 7.01% 8.30%

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 5 16 12388 73.83 789 773 157.3
A 13 254 10127 59.46 789 773 157.3
A 0 226 6954 39.29 789 773 157.3
B 0 182 80429 530.74 794 777 150.1
B 0 190 41065 268.45 794 777 150.1
B 15 35 31107 202.09 794 777 150.1
C 14 238 121041 682.42 758 763 176.3
C 3 233 86230 484.91 758 763 176.3
C 0 10 41644 231.95 758 763 176.3
D 1 52 1922314 10793.46 735 715 178.0
D 7 238 744268 4176.48 735 715 178.0
D 1 20 377932 2118.8 735 715 178.0

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