ASTROSAT CZTI

Data Quality Report

Orbit 09147

Creation date: 2024-06-27T15:41:55.804791
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/AS1C02_042T01_9000001278_09147cztM0_level2.evt modeM0/AS1C02_042T01_9000001278_09147cztM0_level2_quad_clean.evt
Size (bytes)422,654,40099,288,000
Size403.1 MB 94.7 MB
Events in quadrant A3,228,079643,361
Events in quadrant B3,118,149662,428
Events in quadrant C2,931,927644,027
Events in quadrant D3,089,519613,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134353
B0132932
C0130252
D0137012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6364320.502828%
B6364420.659962%
C6364230.361408%
D6364220.345695%

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 7709 6365 0 0 0.00% 0.00%
B 7709 6365 3 3 0.04% 0.05%
C 7709 6365 0 0 0.00% 0.00%
D 7709 6365 11 11 0.14% 0.17%

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 5 159326 1019.63 771 756 155.5
A 1 162 53355 338.22 771 756 155.5
A 13 248 14108 85.86 771 756 155.5
B 0 214 61227 416.24 782 764 145.3
B 12 111 15499 101.44 782 764 145.3
B 11 111 12506 80.83 782 764 145.3
C 13 61 5669 28.64 750 755 171.6
C 9 68 4556 22.15 750 755 171.6
C 4 239 4323 20.79 750 755 171.6
D 1 52 94545 481.89 734 717 194.7
D 13 104 70972 360.82 734 717 194.7
D 6 225 42320 213.67 734 717 194.7

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