ASTROSAT CZTI

Data Quality Report

Orbit 55246

Creation date: 2025-12-14T10:53:06.995072
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/AS1A14_009T01_9000006534_55246cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55246cztM0_level2_quad_clean.evt
Size (bytes)570,427,200108,388,800
Size544.0 MB 103.4 MB
Events in quadrant A4,040,259705,642
Events in quadrant B3,573,666755,062
Events in quadrant C7,966,047623,713
Events in quadrant D4,930,934655,381

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179923
B0167243
C0290533
D0197043

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77882803.595275%
B77882583.312789%
C7788100712.930149%
D77881231.579353%

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 8883 7792 146 146 1.64% 1.87%
B 8883 7792 14 14 0.16% 0.18%
C 8883 7792 856 856 9.64% 10.99%
D 8883 7792 50 50 0.56% 0.64%

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 0 8 647151 3197.1 828 809 202.2
A 12 115 44199 214.63 828 809 202.2
A 4 205 38796 187.9 828 809 202.2
B 5 185 71772 399.79 825 793 177.5
B 2 249 55312 307.08 825 793 177.5
B 5 172 40108 221.44 825 793 177.5
C 9 38 2296768 10799.02 781 775 212.6
C 12 254 1307283 6145.06 781 775 212.6
C 1 16 465879 2187.58 781 775 212.6
D 5 38 984311 4324.27 811 777 227.4
D 2 249 251539 1102.52 811 777 227.4
D 2 31 171873 752.25 811 777 227.4

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