ASTROSAT CZTI

Data Quality Report

Orbit 20180920_T02_094T01_9000002380_level2

Creation date: 2018-09-24T12:31:30.447599
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T02_094T01_9000002380cztM0_level2_bc.evt modeM0/AS1T02_094T01_9000002380cztM0_level2_quad_clean.evt
Size (bytes)3,036,453,1201,005,007,680
Size2.8 GB 958.5 MB
Events in quadrant A18,996,8006,590,813
Events in quadrant B20,580,7676,562,019
Events in quadrant C15,870,2606,264,758
Events in quadrant D31,512,6755,988,442

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01658290
B01707670
C01557210
D02085590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014980
B014980
C014980
D014980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7342211831.611234%
B7342212741.735175%
C7342211651.586718%
D7342245746.229740%

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 85562 73410 17 17 0.02% 0.02%
B 85563 73411 8 8 0.01% 0.01%
C 85563 73411 30 30 0.04% 0.04%
D 85562 73410 669 669 0.78% 0.91%

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 0 253 1825829 2157.38 3909 3850 844.5
A 15 174 1701994 2010.75 3909 3850 844.5
A 8 247 187915 217.95 3909 3850 844.5
B 5 65 2067898 2799.79 3908 3821 737.2
B 0 189 942678 1273.5 3908 3821 737.2
B 7 220 610374 822.75 3908 3821 737.2
C 9 236 605445 691.49 3718 3710 870.2
C 3 233 377653 429.72 3718 3710 870.2
C 3 9 352264 400.54 3718 3710 870.2
D 1 52 10529826 12016.93 3760 3633 875.9
D 5 222 3595638 4100.71 3760 3633 875.9
D 7 38 1713373 1951.88 3760 3633 875.9

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