ASTROSAT CZTI

Data Quality Report

Orbit 07503

Creation date: 2024-06-27T15:20:35.655056
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/AS1T01_156T01_9000001034_07503cztM0_level2.evt modeM0/AS1T01_156T01_9000001034_07503cztM0_level2_quad_clean.evt
Size (bytes)491,201,28094,979,520
Size468.4 MB 90.6 MB
Events in quadrant A3,413,335597,143
Events in quadrant B3,685,886606,761
Events in quadrant C3,514,476600,378
Events in quadrant D3,770,427567,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149443
B0156802
C0151992
D0160712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7237280.386901%
B7237640.884344%
C7237390.538897%
D7237911.257427%

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 7982 7239 1 1 0.01% 0.01%
B 7982 7239 4 4 0.05% 0.06%
C 7982 7239 8 8 0.10% 0.11%
D 7982 7239 58 58 0.73% 0.80%

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 15 239 13921 72.07 881 862 181.2
A 3 1 9529 47.83 881 862 181.2
A 0 226 8360 41.38 881 862 181.2
B 0 214 105862 609.77 892 870 172.2
B 0 219 51542 294.29 892 870 172.2
B 0 229 37440 212.39 892 870 172.2
C 8 229 66378 325.41 860 867 201.3
C 1 16 55990 273.81 860 867 201.3
C 8 128 12246 56.52 860 867 201.3
D 2 14 168334 783.29 855 826 213.9
D 2 136 106541 494.34 855 826 213.9
D 2 152 85669 396.74 855 826 213.9

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