ASTROSAT CZTI

Data Quality Report

Orbit 15232

Creation date: 2024-06-27T17:05:38.805589
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/AS1A04_105T01_9000002248_15232cztM0_level2.evt modeM0/AS1A04_105T01_9000002248_15232cztM0_level2_quad_clean.evt
Size (bytes)866,822,40089,049,600
Size826.7 MB 84.9 MB
Events in quadrant A12,547,367438,704
Events in quadrant B4,606,701573,238
Events in quadrant C4,227,642577,571
Events in quadrant D4,319,871539,743

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0428763
B0189992
C0173932
D0187102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8145309237.961940%
B81453053.744629%
C81451762.160835%
D81452763.388582%

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 8606 8148 2685 2685 31.20% 32.95%
B 8606 8149 60 60 0.70% 0.74%
C 8606 8149 0 0 0.00% 0.00%
D 8606 8149 107 107 1.24% 1.31%

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 0 253 9025908 49478.87 887 866 182.4
A 12 189 89052 483.47 887 866 182.4
A 9 143 17289 90.04 887 866 182.4
B 10 16 294313 1505.81 1004 978 194.8
B 3 64 176501 901.03 1004 978 194.8
B 0 189 58663 296.12 1004 978 194.8
C 3 233 369614 1593.08 981 989 231.4
C 8 128 10960 43.09 981 989 231.4
C 4 254 8345 31.79 981 989 231.4
D 7 38 362673 1520.07 964 932 238.0
D 7 223 177326 741.22 964 932 238.0
D 14 35 51570 212.79 964 932 238.0

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