ASTROSAT CZTI

Data Quality Report

Orbit 36375

Creation date: 2022-06-20T20:01:56.443547
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/AS1A11_097T24_9000005196_36375cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36375cztM0_level2_quad_clean.evt
Size (bytes)527,287,68052,306,560
Size502.9 MB 49.9 MB
Events in quadrant A2,968,467332,024
Events in quadrant B5,677,059268,238
Events in quadrant C3,042,508313,955
Events in quadrant D3,922,222298,258

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120723
B0203502
C0120322
D0151302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5298380.717252%
B5298121622.952057%
C5298701.321253%
D52982474.662137%

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 7241 5299 31 31 0.43% 0.59%
B 7240 5298 1072 1072 14.81% 20.23%
C 7240 5298 61 61 0.84% 1.15%
D 7240 5298 223 223 3.08% 4.21%

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 184421 1358.89 678 668 135.2
A 9 143 92069 675.92 678 668 135.2
A 15 223 66385 485.99 678 668 135.2
B 5 172 2894714 25585.26 598 585 113.1
B 5 255 238697 2105.01 598 585 113.1
B 0 189 105355 926.21 598 585 113.1
C 0 10 236987 1575.3 648 654 150.0
C 15 214 227610 1512.79 648 654 150.0
C 4 254 41975 275.43 648 654 150.0
D 2 250 514178 3284.3 646 630 156.4
D 10 118 224472 1431.54 646 630 156.4
D 12 6 213698 1362.64 646 630 156.4

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