ASTROSAT CZTI

Data Quality Report

Orbit 18817

Creation date: 2024-06-27T17:55:13.526420
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_173T01_9000002812_18817cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18817cztM0_level2_quad_clean.evt
Size (bytes)438,099,84085,547,520
Size417.8 MB 81.6 MB
Events in quadrant A3,142,662560,001
Events in quadrant B3,270,544565,339
Events in quadrant C3,409,540534,649
Events in quadrant D3,047,828521,971

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125421
B0130131
C0136201
D0124171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58511131.931294%
B58521141.948052%
C58521462.494874%
D58521011.725906%

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 7101 5852 5 5 0.07% 0.09%
B 7102 5853 2 2 0.03% 0.03%
C 7102 5853 12 12 0.17% 0.21%
D 7102 5853 4 4 0.06% 0.07%

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 4 2 58003 355.25 800 787 161.1
A 13 254 8722 49.27 800 787 161.1
A 0 226 7220 39.94 800 787 161.1
B 4 171 50691 336.95 786 769 148.2
B 12 18 32899 216.86 786 769 148.2
B 0 229 24015 156.9 786 769 148.2
C 3 233 264667 1510.34 751 758 174.7
C 14 238 118674 674.83 751 758 174.7
C 0 207 98669 560.34 751 758 174.7
D 12 233 41509 217.46 773 753 187.4
D 7 223 29806 155.02 773 753 187.4
D 2 234 23979 123.93 773 753 187.4

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