ASTROSAT CZTI

Data Quality Report

Orbit 46088

Creation date: 2024-06-27T23:19:02.500064
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_077T01_9000006168_46088cztM0_level2.fits modeM0/AS1A13_077T01_9000006168_46088cztM0_level2_quad_clean.evt
Size (bytes)511,842,240122,005,440
Size488.1 MB 116.4 MB
Events in quadrant A6,276,170806,506
Events in quadrant B3,947,104828,356
Events in quadrant C3,624,408802,266
Events in quadrant D4,504,804724,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234120
B0170250
C0163690
D0186400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7659320.417809%
B7659540.705053%
C7660460.600522%
D76591932.519911%

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 7659 7659 0 0 0.00% 0.00%
B 7659 7659 26 26 0.34% 0.34%
C 7660 7660 33 33 0.43% 0.43%
D 7659 7659 180 180 2.35% 2.35%

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 2954696 16574.6 856 837 178.2
A 3 137 10224 52.67 856 837 178.2
A 13 254 9159 46.7 856 837 178.2
B 0 190 351158 2044.85 855 827 171.3
B 5 172 127512 739.45 855 827 171.3
B 0 245 32314 183.79 855 827 171.3
C 14 254 247860 1239.02 844 849 199.4
C 12 2 53742 265.31 844 849 199.4
C 3 233 35356 173.09 844 849 199.4
D 5 235 418140 1998.57 831 808 208.8
D 13 249 391174 1869.43 831 808 208.8
D 1 52 388507 1856.66 831 808 208.8

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