ASTROSAT CZTI

Data Quality Report

Orbit 44971

Creation date: 2024-06-27T23:08:36.311417
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_044T01_9000006034_44971cztM0_level2.fits modeM0/AS1A13_044T01_9000006034_44971cztM0_level2_quad_clean.evt
Size (bytes)666,331,200125,527,680
Size635.5 MB 119.7 MB
Events in quadrant A6,476,061856,338
Events in quadrant B5,932,837844,191
Events in quadrant C3,889,622839,723
Events in quadrant D7,755,956711,381

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252571
B0231451
C0172071
D0284866

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78921762.230106%
B78925476.931069%
C7892650.823619%
D789190811.506780%

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 7892 7892 32 32 0.41% 0.41%
B 7892 7891 239 239 3.03% 3.03%
C 7892 7892 35 35 0.44% 0.44%
D 7891 7891 656 656 8.31% 8.31%

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 2794309 15131.1 891 871 184.6
A 13 248 169031 910.86 891 871 184.6
A 0 243 33475 176.6 891 871 184.6
B 0 219 1202924 7043.75 876 851 170.7
B 0 189 676391 3958.44 876 851 170.7
B 0 168 103824 603.39 876 851 170.7
C 12 250 145768 701.22 879 882 206.6
C 12 2 90157 432.07 879 882 206.6
C 14 254 59987 286.06 879 882 206.6
D 13 249 1016635 4788.26 845 818 212.1
D 1 47 799179 3763.24 845 818 212.1
D 1 52 709202 3339.11 845 818 212.1

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