ASTROSAT CZTI

Data Quality Report

Orbit 36639

Creation date: 2024-06-27T21:29:34.883015
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/AS1A11_049T04_9000005230_36639cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36639cztM0_level2_quad_clean.evt
Size (bytes)82,296,00017,372,160
Size78.5 MB 16.6 MB
Events in quadrant A535,121114,921
Events in quadrant B508,976117,486
Events in quadrant C689,633114,764
Events in quadrant D693,326107,116

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021432
B020021
C025601
D026821

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91560.655738%
B91580.874317%
C915859.289617%
D915333.606557%

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 3008 916 0 0 0.00% 0.00%
B 3008 916 2 2 0.07% 0.22%
C 3008 916 58 58 1.93% 6.33%
D 3008 916 27 27 0.90% 2.95%

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 10 83 65927 2526.97 120 117 26.0
A 13 6 2987 110.2 120 117 26.0
A 10 67 1694 60.55 120 117 26.0
B 5 255 26968 1093.24 117 114 24.6
B 0 213 9124 366.8 117 114 24.6
B 12 111 2775 108.33 117 114 24.6
C 0 10 206357 7581.11 112 113 27.2
C 15 214 42722 1566.22 112 113 27.2
C 0 207 1979 68.59 112 113 27.2
D 12 235 169798 5709.15 116 112 29.7
D 2 153 26407 884.7 116 112 29.7
D 2 249 26214 878.21 116 112 29.7

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