ASTROSAT CZTI

Data Quality Report

Orbit 47681

Creation date: 2024-07-22T22:12:23.595975
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/AS1A13_082T01_9000006342_47681cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47681cztM0_level2_quad_clean.evt
Size (bytes)521,222,400114,730,560
Size497.1 MB 109.4 MB
Events in quadrant A7,547,072744,660
Events in quadrant B3,656,323780,060
Events in quadrant C3,619,573749,985
Events in quadrant D3,909,359695,075

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278203
B0155503
C0159733
D0167013

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72354776.592951%
B72362683.703704%
C72362663.676064%
D72362283.150912%

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 7800 7236 7 7 0.09% 0.10%
B 7801 7236 1 1 0.01% 0.01%
C 7801 7237 39 39 0.50% 0.54%
D 7801 7237 69 69 0.88% 0.95%

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 4195406 23937.85 841 822 175.2
A 9 191 91174 515.63 841 822 175.2
A 3 137 10166 53.32 841 822 175.2
B 0 200 185969 1076.85 850 825 171.9
B 0 190 46316 264.59 850 825 171.9
B 12 111 22293 124.86 850 825 171.9
C 14 254 302555 1524.47 830 833 197.9
C 3 233 59014 293.96 830 833 197.9
C 12 250 17447 83.94 830 833 197.9
D 12 7 354079 1680.48 841 815 210.2
D 2 165 73068 343.71 841 815 210.2
D 8 176 63095 296.27 841 815 210.2

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