ASTROSAT CZTI

Data Quality Report

Orbit 46159

Creation date: 2024-06-27T23:19:50.530386
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/AS1A13_092T16_9000006178_46159cztM0_level2.fits modeM0/AS1A13_092T16_9000006178_46159cztM0_level2_quad_clean.evt
Size (bytes)637,767,360117,051,840
Size608.2 MB 111.6 MB
Events in quadrant A6,848,434783,024
Events in quadrant B3,771,757822,072
Events in quadrant C5,467,964769,243
Events in quadrant D6,941,447649,737

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253202
B0162342
C0213373
D0258652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74702873.842035%
B7471991.325124%
C74703694.939759%
D747098013.119143%

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 8785 7473 63 63 0.72% 0.84%
B 8786 7474 23 23 0.26% 0.31%
C 8785 7473 234 234 2.66% 3.13%
D 8785 7473 758 758 8.63% 10.14%

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 3201733 18341.81 838 820 174.5
A 7 3 154059 878.09 838 820 174.5
A 13 248 144369 822.56 838 820 174.5
B 3 112 292734 1735.6 845 817 168.2
B 5 172 68714 403.68 845 817 168.2
B 12 111 21974 125.79 845 817 168.2
C 14 254 2086643 10770.57 823 827 193.7
C 12 2 105108 538.48 823 827 193.7
C 10 20 27808 139.32 823 827 193.7
D 13 249 1435402 7191.34 787 762 199.5
D 2 249 854975 4281.87 787 762 199.5
D 2 37 755344 3782.45 787 762 199.5

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