ASTROSAT CZTI

Data Quality Report

Orbit 14545

Creation date: 2024-06-27T16:56:40.915767
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/AS1G08_081T01_9000002144_14545cztM0_level2.evt modeM0/AS1G08_081T01_9000002144_14545cztM0_level2_quad_clean.evt
Size (bytes)521,193,600107,645,760
Size497.0 MB 102.7 MB
Events in quadrant A3,772,050707,989
Events in quadrant B3,833,353697,556
Events in quadrant C3,819,785699,044
Events in quadrant D3,901,236684,915

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156943
B0159402
C0156492
D0160582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6752741.095972%
B67521221.806872%
C6752731.081161%
D6752891.318128%

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 9228 6755 2 2 0.02% 0.03%
B 9228 6755 30 30 0.33% 0.44%
C 9228 6755 5 5 0.05% 0.07%
D 9228 6755 74 74 0.80% 1.10%

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 8 15 264116 1485.37 891 874 177.2
A 12 189 40368 222.85 891 874 177.2
A 15 69 29770 163.05 891 874 177.2
B 4 142 114673 687.83 888 869 165.5
B 0 189 94305 564.73 888 869 165.5
B 0 229 27069 158.35 888 869 165.5
C 3 233 404655 2024.34 875 882 199.5
C 13 61 6389 27.61 875 882 199.5
C 14 234 3730 14.28 875 882 199.5
D 12 110 347103 1650.38 878 856 209.8
D 2 152 102813 485.97 878 856 209.8
D 13 122 78278 369.03 878 856 209.8

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