ASTROSAT CZTI

Data Quality Report

Orbit 51286

Creation date: 2025-03-22T21:09:53.999548
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/AS1C07_001T01_9000006454_51286cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51286cztM0_level2_quad_clean.evt
Size (bytes)2,324,272,320223,418,880
Size2.2 GB 213.1 MB
Events in quadrant A21,052,7691,426,873
Events in quadrant B11,039,2631,814,029
Events in quadrant C31,564,666999,417
Events in quadrant D20,935,0951,227,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07566941
B04596237
C010689567
D07532751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03811
C03820
D03820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18786311216.565528%
B187817383.929503%
C18780773741.198083%
D18785385320.511046%

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 19907 18792 2356 2356 11.84% 12.54%
B 19907 18792 253 253 1.27% 1.35%
C 19907 18791 7576 7576 38.06% 40.32%
D 19907 18794 3793 3793 19.05% 20.18%

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 3 5335342 11475.87 1869 1822 464.8
A 12 250 3789208 8149.13 1869 1822 464.8
A 9 96 1407006 3023.47 1869 1822 464.8
B 5 185 996385 2377.9 1951 1878 418.2
B 5 172 435378 1036.51 1951 1878 418.2
B 4 170 349084 830.18 1951 1878 418.2
C 4 12 17245078 40805.44 1530 1519 422.6
C 10 171 3810233 9013.0 1530 1519 422.6
C 3 233 1736666 4106.08 1530 1519 422.6
D 12 2 3328077 6831.54 1755 1695 486.9
D 7 60 3270828 6713.96 1755 1695 486.9
D 8 176 1453883 2982.42 1755 1695 486.9

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