ASTROSAT CZTI

Data Quality Report

Orbit 20200320_A07_010T12_9000003582_level2

Creation date: 2025-12-10T05:37:22.239853
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/AS1A07_010T12_9000003582cztM0_level2.fits modeM0/AS1A07_010T12_9000003582cztM0_level2_quad_clean.evt
Size (bytes)646,868,160556,776,000
Size616.9 MB 531.0 MB
Events in quadrant A4,048,9063,281,797
Events in quadrant B3,842,8063,266,428
Events in quadrant C3,934,9503,133,008
Events in quadrant D3,438,7802,854,218

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01319510
B01368300
C01412230
D01781710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012880
B012880
C012880
D012880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A630507811.238699%
B6305011721.858842%
C6305013352.117367%
D6305018632.954798%

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 74300 63043 0 0 0.00% 0.00%
B 74300 63039 0 0 0.00% 0.00%
C 74300 63043 0 0 0.00% 0.00%
D 74300 63040 0 0 0.00% 0.00%

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 29 3840 10.94 1055 996 259.9
A 7 110 3177 8.39 1055 996 259.9
A 0 30 3019 7.78 1055 996 259.9
B 2 9 3188 11.14 1019 979 198.4
B 2 8 2717 8.76 1019 979 198.4
B 3 80 2521 7.77 1019 979 198.4
C 1 80 3099 8.17 1038 978 259.6
C 1 81 2998 7.78 1038 978 259.6
C 12 241 2729 6.74 1038 978 259.6
D 10 189 2497 6.16 981 898 259.4
D 7 3 2466 6.04 981 898 259.4
D 6 67 2432 5.91 981 898 259.4

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