ASTROSAT CZTI

Data Quality Report

Orbit 31338

Creation date: 2024-06-27T20:26:55.251002
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/AS1T04_025T01_9000004538_31338cztM0_level2.evt modeM0/AS1T04_025T01_9000004538_31338cztM0_level2_quad_clean.evt
Size (bytes)527,345,280134,792,640
Size502.9 MB 128.5 MB
Events in quadrant A3,093,040952,444
Events in quadrant B4,770,779940,180
Events in quadrant C3,693,498879,741
Events in quadrant D4,022,075906,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127321
B0180561
C0149951
D0160171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5775611.056277%
B57751101.904762%
C57765198.985457%
D57761091.887119%

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 7110 5776 0 0 0.00% 0.00%
B 7110 5776 4 4 0.06% 0.07%
C 7111 5777 14 14 0.20% 0.24%
D 7111 5777 38 38 0.53% 0.66%

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 13 254 11734 70.12 801 789 156.1
A 3 137 7041 40.05 801 789 156.1
A 0 226 6746 38.16 801 789 156.1
B 6 159 1571002 10962.86 776 759 143.2
B 4 80 87232 603.72 776 759 143.2
B 0 190 52934 364.27 776 759 143.2
C 3 233 243131 1442.31 738 746 168.1
C 14 238 219067 1299.12 738 746 168.1
C 14 254 138914 822.17 738 746 168.1
D 8 195 864986 4757.46 783 765 181.7
D 2 250 109921 600.89 783 765 181.7
D 12 79 49951 270.76 783 765 181.7

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