ASTROSAT CZTI

Data Quality Report

Orbit 01086

Creation date: 2024-06-27T14:07:16.208738
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/AS1P01_997T02_9000000212_01086cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01086cztM0_level2_quad_clean.evt
Size (bytes)862,021,44079,263,360
Size822.1 MB 75.6 MB
Events in quadrant A6,016,061527,260
Events in quadrant B6,285,076523,675
Events in quadrant C6,100,387503,028
Events in quadrant D7,368,323490,614

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214892
B0222741
C0217111
D0254761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5073240.473093%
B5073240.473093%
C5073110.216834%
D5073781.537552%

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 6238 5074 176 176 2.82% 3.47%
B 6238 5074 227 227 3.64% 4.47%
C 6238 5074 172 172 2.76% 3.39%
D 6238 5074 667 667 10.69% 13.15%

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 4 32 16174 39.26 1564 1567 372.1
A 11 79 6178 12.39 1564 1567 372.1
A 3 111 4517 7.93 1564 1567 372.1
B 5 191 50746 129.54 1605 1610 379.3
B 15 22 44905 114.14 1605 1610 379.3
B 15 85 35364 88.98 1605 1610 379.3
C 15 241 242187 583.99 1481 1531 412.1
C 3 79 27137 62.14 1481 1531 412.1
C 9 52 22817 51.65 1481 1531 412.1
D 12 22 1469700 3276.1 1454 1505 448.2
D 13 73 428153 952.01 1454 1505 448.2
D 2 107 14086 28.07 1454 1505 448.2

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