ASTROSAT CZTI

Data Quality Report

Orbit 34933

Creation date: 2022-03-15T12:00:14.091470
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_065T12_9000005004_34933cztM0_level2.evt modeM0/AS1A11_065T12_9000005004_34933cztM0_level2_quad_clean.evt
Size (bytes)563,008,32065,600,640
Size536.9 MB 62.6 MB
Events in quadrant A4,809,292400,002
Events in quadrant B3,641,760405,104
Events in quadrant C3,516,001396,733
Events in quadrant D4,671,896359,573

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184173
B0147862
C0140452
D0180012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60813485.722743%
B60811081.776024%
C60811572.581812%
D60813435.640520%

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 9335 6082 305 305 3.27% 5.01%
B 9336 6083 66 66 0.71% 1.08%
C 9336 6083 146 146 1.56% 2.40%
D 9336 6082 318 318 3.41% 5.23%

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 2051726 14712.12 688 673 139.4
A 10 83 70799 503.01 688 673 139.4
A 13 6 13103 89.16 688 673 139.4
B 5 172 592894 4430.78 691 674 133.7
B 0 190 158956 1184.21 691 674 133.7
B 4 232 58081 429.5 691 674 133.7
C 0 10 285708 1818.84 674 679 156.7
C 15 214 254739 1621.22 674 679 156.7
C 4 254 246001 1565.46 674 679 156.7
D 8 195 650288 3959.52 662 642 164.1
D 1 52 305305 1856.88 662 642 164.1
D 12 233 267971 1629.34 662 642 164.1

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