ASTROSAT CZTI

Data Quality Report

Orbit 20210907_A10_053T11_9000004688_level2

Creation date: 2021-09-28T10:47:25.350330
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/AS1A10_053T11_9000004688cztM0_level2_bc.evt modeM0/AS1A10_053T11_9000004688cztM0_level2_quad_clean.evt
Size (bytes)1,610,245,440344,376,000
Size1.5 GB 328.4 MB
Events in quadrant A6,448,0432,223,893
Events in quadrant B17,733,2062,100,545
Events in quadrant C10,719,3452,144,668
Events in quadrant D12,035,2022,109,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570720
B0964980
C0750070
D0776790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05460
B05480
C05500
D05440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A269601970.730712%
B2688823018.557721%
C2686120137.494136%
D269518833.276316%

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 34407 27051 0 0 0.00% 0.00%
B 34407 26991 312 312 0.91% 1.16%
C 34406 26961 170 170 0.49% 0.63%
D 34407 27059 21 21 0.06% 0.08%

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 12 189 126725 364.2 1626 1606 343.5
A 13 254 46357 130.26 1626 1606 343.5
A 13 6 40100 112.05 1626 1606 343.5
B 6 159 6840057 23283.54 1598 1567 293.7
B 10 245 4333234 14748.36 1598 1567 293.7
B 0 190 189727 640.64 1598 1567 293.7
C 3 233 3917347 10768.58 1568 1573 363.6
C 0 10 552912 1516.21 1568 1573 363.6
C 14 254 49283 131.2 1568 1573 363.6
D 8 195 4312031 12086.73 1605 1563 356.6
D 12 233 1292344 3619.4 1605 1563 356.6
D 12 218 129097 357.61 1605 1563 356.6

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