ASTROSAT CZTI

Data Quality Report

Orbit 25141

Creation date: 2024-06-27T19:14:18.978058
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/AS1A07_018T07_9000003680_25141cztM0_level2.evt modeM0/AS1A07_018T07_9000003680_25141cztM0_level2_quad_clean.evt
Size (bytes)536,215,68073,699,200
Size511.4 MB 70.3 MB
Events in quadrant A3,394,906458,095
Events in quadrant B3,445,608464,412
Events in quadrant C4,192,941441,810
Events in quadrant D4,788,046436,391

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142140
B0142930
C0164940
D0185890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6175711.149798%
B6176861.392487%
C61762263.659326%
D61752443.951417%

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 7445 6175 0 0 0.00% 0.00%
B 7446 6176 2 2 0.03% 0.03%
C 7446 6176 18 18 0.24% 0.29%
D 7445 6175 134 134 1.80% 2.17%

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 10688 56.33 878 865 174.4
A 0 226 7517 38.14 878 865 174.4
A 3 137 7209 36.38 878 865 174.4
B 3 64 35915 215.87 869 851 162.4
B 12 111 18854 110.84 869 851 162.4
B 11 111 16973 99.25 869 851 162.4
C 7 247 443690 2276.43 843 852 194.5
C 0 239 287269 1472.34 843 852 194.5
C 14 238 137258 701.2 843 852 194.5
D 1 52 853040 4194.47 848 826 203.2
D 8 195 329830 1619.31 848 826 203.2
D 12 235 256450 1258.14 848 826 203.2

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