ASTROSAT CZTI

Data Quality Report

Orbit 29312

Creation date: 2024-06-27T20:02:53.213208
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_083T01_9000004214_29312cztM0_level2.evt modeM0/AS1A10_083T01_9000004214_29312cztM0_level2_quad_clean.evt
Size (bytes)853,692,48079,179,840
Size814.1 MB 75.5 MB
Events in quadrant A3,693,368547,757
Events in quadrant B3,583,002562,402
Events in quadrant C11,207,527415,313
Events in quadrant D6,992,601478,581

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143381
B0141791
C0371216
D0248201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56091913.405242%
B5609841.497593%
C5609381968.087003%
D560995417.008379%

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 6929 5611 101 101 1.46% 1.80%
B 6929 5611 20 20 0.29% 0.36%
C 6929 5611 2915 2915 42.07% 51.95%
D 6929 5611 709 709 10.23% 12.64%

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 13 727226 4857.65 755 742 149.6
A 15 174 17950 115.06 755 742 149.6
A 14 235 17869 114.52 755 742 149.6
B 0 190 301959 2194.91 744 729 137.2
B 5 255 268328 1949.86 744 729 137.2
B 15 35 44379 318.06 744 729 137.2
C 3 233 8774226 64609.16 595 600 135.8
C 14 238 94138 688.82 595 600 135.8
C 2 114 11734 81.99 595 600 135.8
D 1 52 1814538 11273.5 693 675 160.9
D 7 80 895044 5558.67 693 675 160.9
D 8 195 863139 5360.38 693 675 160.9

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