ASTROSAT CZTI

Data Quality Report

Orbit 31023

Creation date: 2024-06-27T20:22:24.898704
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_071T54_9000004482_31023cztM0_level2.evt modeM0/AS1A10_071T54_9000004482_31023cztM0_level2_quad_clean.evt
Size (bytes)600,117,12079,666,560
Size572.3 MB 76.0 MB
Events in quadrant A3,340,409503,198
Events in quadrant B5,407,593505,160
Events in quadrant C4,002,456464,731
Events in quadrant D4,961,821462,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141362
B0209402
C0160392
D0191892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6839360.526393%
B68391021.491446%
C68392643.860213%
D68391001.462202%

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 7609 6840 5 5 0.07% 0.07%
B 7609 6839 4 4 0.05% 0.06%
C 7609 6839 159 159 2.09% 2.32%
D 7609 6839 85 85 1.12% 1.24%

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 31957 180.22 856 838 172.7
A 13 254 12212 65.87 856 838 172.7
A 3 137 8572 44.79 856 838 172.7
B 6 159 1934178 11685.7 849 828 165.4
B 15 33 42863 254.07 849 828 165.4
B 0 190 26218 153.46 849 828 165.4
C 0 10 685932 3594.29 803 809 190.6
C 14 238 129979 677.65 803 809 190.6
C 2 114 15482 76.98 803 809 190.6
D 13 174 1137860 5817.24 813 790 195.5
D 8 195 435815 2225.58 813 790 195.5
D 2 250 170492 868.19 813 790 195.5

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