ASTROSAT CZTI

Data Quality Report

Orbit 35894

Creation date: 2022-06-08T22:55:40.772055
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_080T01_9000005146_35894cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35894cztM0_level2_quad_clean.evt
Size (bytes)489,798,72080,588,160
Size467.1 MB 76.9 MB
Events in quadrant A2,798,340529,009
Events in quadrant B3,623,745518,667
Events in quadrant C3,100,254517,441
Events in quadrant D4,926,945478,713

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118273
B0145212
C0125952
D0185912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A566470.123588%
B56643546.250000%
C5664360.635593%
D56642404.237288%

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 7306 5665 2 2 0.03% 0.04%
B 7306 5665 239 239 3.27% 4.22%
C 7306 5665 29 29 0.40% 0.51%
D 7306 5665 255 255 3.49% 4.50%

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 171550 1257.92 666 655 135.9
A 7 3 32634 235.39 666 655 135.9
A 13 6 12668 88.43 666 655 135.9
B 5 172 606239 4937.9 642 627 122.6
B 5 63 323049 2628.89 642 627 122.6
B 5 255 84278 682.05 642 627 122.6
C 0 207 249027 1669.32 641 646 148.8
C 15 214 240476 1611.85 641 646 148.8
C 0 10 83579 557.38 641 646 148.8
D 12 227 1694532 10815.08 633 618 156.6
D 13 249 227311 1447.36 633 618 156.6
D 13 153 181667 1155.94 633 618 156.6

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