ASTROSAT CZTI

Data Quality Report

Orbit 20181129_C04_004T01_9000002542_level2

Creation date: 2018-11-30T09:45:07.364688
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C04_004T01_9000002542cztM0_level2_bc.evt modeM0/AS1C04_004T01_9000002542cztM0_level2_quad_clean.evt
Size (bytes)1,356,485,760423,135,360
Size1.3 GB 403.5 MB
Events in quadrant A6,848,6262,673,979
Events in quadrant B6,841,4382,733,066
Events in quadrant C15,603,9632,560,665
Events in quadrant D9,481,9322,527,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0698920
B0701100
C01070030
D0848800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06900
B06900
C06900
D06900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A337785381.592753%
B337786441.906566%
C3377822036.521997%
D3377810973.247676%

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 37338 33777 2 2 0.01% 0.01%
B 37338 33777 1 1 0.00% 0.00%
C 37338 33778 0 0 0.00% 0.00%
D 37338 33778 16 16 0.04% 0.05%

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 199333 534.66 1704 1667 369.7
A 12 96 77266 204.49 1704 1667 369.7
A 4 2 15817 38.27 1704 1667 369.7
B 4 216 66691 196.38 1734 1685 331.0
B 4 173 54606 159.87 1734 1685 331.0
B 0 229 29277 83.35 1734 1685 331.0
C 3 233 9306641 24119.69 1632 1617 385.8
C 9 160 9789 21.18 1632 1617 385.8
C 13 61 9395 20.16 1632 1617 385.8
D 13 232 1374802 3534.22 1679 1620 388.5
D 13 200 532364 1366.0 1679 1620 388.5
D 13 249 364113 932.96 1679 1620 388.5

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