ASTROSAT CZTI

Data Quality Report

Orbit 20210127_A10_103T08_9000004136_level2

Creation date: 2021-01-30T10:38:34.430789
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/AS1A10_103T08_9000004136cztM0_level2_bc.evt modeM0/AS1A10_103T08_9000004136cztM0_level2_quad_clean.evt
Size (bytes)6,290,231,0401,533,185,280
Size5.9 GB 1.4 GB
Events in quadrant A20,033,97010,998,708
Events in quadrant B22,984,10911,102,016
Events in quadrant C24,920,62010,667,104
Events in quadrant D117,022,7038,061,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016660
B016660
C016660
D016660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01762180
B01898290
C01948690
D04905270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8158513751.685359%
B8158628513.494472%
C8158622082.706347%
D815864244052.018729%

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 94646 81575 49 49 0.05% 0.06%
B 94647 81575 83 83 0.09% 0.10%
C 94647 81577 4 4 0.00% 0.00%
D 94646 81568 24261 24261 25.63% 29.74%

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 14 235 2535293 2644.51 4425 4361 957.0
A 5 98 157739 160.26 4425 4361 957.0
A 13 254 152591 154.88 4425 4361 957.0
B 5 172 2091752 2505.94 4445 4346 833.0
B 5 255 1614635 1933.16 4445 4346 833.0
B 10 246 1357719 1624.73 4445 4346 833.0
C 3 233 8166762 8019.86 4273 4266 1017.8
C 15 208 124275 117.91 4273 4266 1017.8
C 14 254 63227 57.93 4273 4266 1017.8
D 8 195 77863508 94989.08 3539 3426 819.7
D 1 52 21066588 25697.0 3539 3426 819.7
D 13 104 1890629 2302.38 3539 3426 819.7

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