ASTROSAT CZTI

Data Quality Report

Orbit 17247

Creation date: 2024-06-27T17:34:04.148979
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/AS1A05_185T04_9000002552_17247cztM0_level2.evt modeM0/AS1A05_185T04_9000002552_17247cztM0_level2_quad_clean.evt
Size (bytes)445,625,28082,281,600
Size425.0 MB 78.5 MB
Events in quadrant A3,191,750513,743
Events in quadrant B3,285,775515,218
Events in quadrant C3,219,767492,463
Events in quadrant D3,330,117490,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139911
B0141111
C0139661
D0146081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6886680.987511%
B6886680.987511%
C6886761.103689%
D6886821.190822%

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 7636 6886 1 1 0.01% 0.01%
B 7636 6886 2 2 0.03% 0.03%
C 7636 6887 0 0 0.00% 0.00%
D 7636 6887 27 27 0.35% 0.39%

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 23 13046 72.69 824 804 168.4
A 15 174 10968 60.36 824 804 168.4
A 0 226 7905 42.17 824 804 168.4
B 0 197 34852 214.2 821 800 159.0
B 12 111 19366 116.79 821 800 159.0
B 7 220 18867 113.65 821 800 159.0
C 14 238 120387 646.14 786 788 185.1
C 3 233 20580 106.93 786 788 185.1
C 7 220 8462 41.46 786 788 185.1
D 10 70 181563 931.07 799 776 194.2
D 13 189 72790 370.88 799 776 194.2
D 2 234 31531 158.39 799 776 194.2

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