ASTROSAT CZTI

Data Quality Report

Orbit 02976

Creation date: 2024-06-27T14:22:57.370868
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/AS1G05_238T04_9000000416_02976cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02976cztM0_level2_quad_clean.evt
Size (bytes)667,281,60084,974,400
Size636.4 MB 81.0 MB
Events in quadrant A6,400,177486,534
Events in quadrant B4,338,395489,691
Events in quadrant C3,999,641492,388
Events in quadrant D4,857,141476,718

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256503
B0195253
C0185643
D0214863

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90418669.578586%
B9041410.453490%
C9041220.243336%
D90411401.548501%

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 13321 9043 741 741 5.56% 8.19%
B 13321 9043 24 24 0.18% 0.27%
C 13321 9043 20 20 0.15% 0.22%
D 13321 9043 125 125 0.94% 1.38%

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 13 9 2730416 14665.81 905 886 186.1
A 0 31 94247 501.63 905 886 186.1
A 0 50 17796 90.86 905 886 186.1
B 0 219 215087 1153.66 957 934 185.6
B 3 27 113150 604.52 957 934 185.6
B 14 167 99904 533.16 957 934 185.6
C 6 80 127022 591.07 913 916 213.4
C 1 16 104307 484.6 913 916 213.4
C 1 192 100169 465.21 913 916 213.4
D 13 114 542496 2491.53 901 874 217.4
D 2 209 223846 1025.7 901 874 217.4
D 13 239 106584 486.28 901 874 217.4

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