ASTROSAT CZTI

Data Quality Report

Orbit 28689

Creation date: 2024-06-27T19:54:58.082997
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_021T04_9000004116_28689cztM0_level2.evt modeM0/AS1A10_021T04_9000004116_28689cztM0_level2_quad_clean.evt
Size (bytes)622,958,40082,019,520
Size594.1 MB 78.2 MB
Events in quadrant A3,202,608542,074
Events in quadrant B4,523,631546,253
Events in quadrant C3,714,224524,432
Events in quadrant D7,034,998465,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127891
B0171201
C0152321
D0250311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57771111.921412%
B57783966.853583%
C57782013.478712%
D577893816.233991%

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 7072 5777 0 0 0.00% 0.00%
B 7073 5778 219 219 3.10% 3.79%
C 7073 5778 10 10 0.14% 0.17%
D 7073 5778 789 789 11.16% 13.66%

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 15 174 22363 131.41 824 809 164.0
A 13 254 9784 54.72 824 809 164.0
A 3 137 7343 39.84 824 809 164.0
B 10 245 1254751 8442.12 793 775 148.5
B 15 33 118884 795.14 793 775 148.5
B 3 209 22329 145.11 793 775 148.5
C 3 233 394099 2167.82 782 791 181.4
C 14 238 142551 781.35 782 791 181.4
C 2 16 108153 591.75 782 791 181.4
D 1 52 2879125 16342.55 753 735 176.1
D 8 195 1161830 6592.31 753 735 176.1
D 2 120 37594 209.27 753 735 176.1

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