ASTROSAT CZTI

Data Quality Report

Orbit 01116

Creation date: 2024-06-27T14:07:46.579444
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/AS1P01_997T01_9000000214_01116cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01116cztM0_level2_quad_clean.evt
Size (bytes)1,015,666,56099,057,600
Size968.6 MB 94.5 MB
Events in quadrant A7,704,983652,144
Events in quadrant B7,850,454649,398
Events in quadrant C7,585,652625,673
Events in quadrant D7,189,716622,111

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274472
B0278921
C0271021
D0259761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6463110.170200%
B646370.108309%
C646320.030945%
D6463520.804580%

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 7463 6464 200 200 2.68% 3.09%
B 7463 6464 190 190 2.55% 2.94%
C 7463 6464 120 120 1.61% 1.86%
D 7463 6464 193 193 2.59% 2.99%

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 4 32 44746 90.02 1980 1993 474.9
A 12 243 41910 84.05 1980 1993 474.9
A 0 253 15646 28.75 1980 1993 474.9
B 2 32 47645 96.25 2019 2026 474.0
B 15 22 42526 85.45 2019 2026 474.0
B 5 249 36925 73.63 2019 2026 474.0
C 15 241 349687 685.42 1829 1891 507.4
C 3 79 27208 49.89 1829 1891 507.4
C 3 111 25654 46.83 1829 1891 507.4
D 10 125 111681 208.13 1857 1890 527.5
D 2 16 56783 104.06 1857 1890 527.5
D 13 73 26160 46.01 1857 1890 527.5

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