ASTROSAT CZTI

Data Quality Report

Orbit 31117

Creation date: 2024-06-27T20:23:34.361644
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_109T01_9000004492_31117cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31117cztM0_level2_quad_clean.evt
Size (bytes)616,089,60085,734,720
Size587.5 MB 81.8 MB
Events in quadrant A3,706,260541,114
Events in quadrant B5,718,021533,674
Events in quadrant C4,823,498506,558
Events in quadrant D3,923,616513,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153122
B0219432
C0186312
D0158402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7202921.277423%
B72021572.179950%
C72025177.178562%
D7202931.291308%

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 9147 7204 1 1 0.01% 0.01%
B 9147 7204 0 0 0.00% 0.00%
C 9147 7204 250 250 2.73% 3.47%
D 9147 7204 19 19 0.21% 0.26%

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 8 144 28062 142.42 954 938 190.5
A 13 254 11413 55.0 954 938 190.5
A 3 137 9839 46.74 954 938 190.5
B 6 159 1955368 10904.92 935 914 179.2
B 0 190 34868 189.45 935 914 179.2
B 0 183 32658 177.12 935 914 179.2
C 10 22 669990 3217.48 891 900 208.0
C 15 208 307361 1473.69 891 900 208.0
C 0 10 196885 942.44 891 900 208.0
D 8 195 335513 1426.7 911 895 234.5
D 13 174 51690 216.57 911 895 234.5
D 2 250 37896 157.76 911 895 234.5

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