ASTROSAT CZTI

Data Quality Report

Orbit 35658

Creation date: 2022-05-06T15:56:11.575236
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/AS1C07_001T07_9000005104_35658cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35658cztM0_level2_quad_clean.evt
Size (bytes)724,299,84091,005,120
Size690.7 MB 86.8 MB
Events in quadrant A9,421,930545,652
Events in quadrant B3,711,971595,543
Events in quadrant C3,584,844614,944
Events in quadrant D4,800,347567,620

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322883
B0152382
C0145192
D0187122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6180101116.359223%
B61802774.482201%
C61801612.605178%
D61804787.734628%

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 8956 6182 731 731 8.16% 11.82%
B 8956 6182 179 179 2.00% 2.90%
C 8956 6182 138 138 1.54% 2.23%
D 8956 6182 386 386 4.31% 6.24%

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 15 169 6637172 48596.65 673 656 136.6
A 10 83 156659 1142.35 673 656 136.6
A 13 6 11344 78.26 673 656 136.6
B 5 172 639754 4883.59 683 663 130.9
B 5 255 324389 2473.74 683 663 130.9
B 5 200 20829 154.1 683 663 130.9
C 0 10 357691 2286.03 680 685 156.2
C 1 23 260438 1663.29 680 685 156.2
C 15 214 255417 1631.14 680 685 156.2
D 10 118 694788 4305.01 661 641 161.2
D 13 249 655803 4063.23 661 641 161.2
D 1 52 333897 2066.81 661 641 161.2

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