ASTROSAT CZTI

Data Quality Report

Orbit 20211112_A11_096T01_9000004766_level2

Creation date: 2021-11-17T11:23:08.532382
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_096T01_9000004766cztM0_level2_bc.evt modeM0/AS1A11_096T01_9000004766cztM0_level2_quad_clean.evt
Size (bytes)8,814,456,0002,108,315,520
Size8.2 GB 2.0 GB
Events in quadrant A35,849,68813,591,112
Events in quadrant B60,202,81613,534,728
Events in quadrant C46,182,40913,228,783
Events in quadrant D113,468,10012,156,998

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033880
B033920
C033860
D033900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03393140
B04469970
C03751800
D06329860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05950
B05950
C05950
D05950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1656362020.121954%
B16563292855.605801%
C16566726731.613478%
D1655371860611.239783%

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 233310 166022 4 4 0.00% 0.00%
B 233310 166056 367 367 0.16% 0.22%
C 233310 166036 386 386 0.17% 0.23%
D 233310 165896 2584 2584 1.11% 1.56%

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 13 254 293583 144.71 9042 8928 1967.0
A 13 6 292288 144.05 9042 8928 1967.0
A 14 235 130019 61.56 9042 8928 1967.0
B 5 172 12180243 7028.74 8869 8694 1731.7
B 0 219 5294756 3052.56 8869 8694 1731.7
B 0 189 1851704 1064.29 8869 8694 1731.7
C 7 221 4094488 2059.96 8699 8650 1983.5
C 0 10 3223293 1620.73 8699 8650 1983.5
C 1 241 2442747 1227.2 8699 8650 1983.5
D 8 195 34268935 16802.21 8288 8117 2039.1
D 2 250 10448841 5120.35 8288 8117 2039.1
D 2 249 7475603 3662.21 8288 8117 2039.1

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