ASTROSAT CZTI

Data Quality Report

Orbit 02817

Creation date: 2024-06-27T14:22:01.563125
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_999T99_9000000410_02817cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02817cztM0_level2_quad_clean.evt
Size (bytes)1,671,690,24061,148,160
Size1.6 GB 58.3 MB
Events in quadrant A8,514,993431,289
Events in quadrant B10,099,450437,401
Events in quadrant C17,233,330222,318
Events in quadrant D14,396,976347,979

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294612
B0341091
C0561601
D0472161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58741262.145046%
B58741232.093973%
C5874490183.435478%
D5874228938.968335%

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 6734 5875 585 585 8.69% 9.96%
B 6734 5875 1352 1352 20.08% 23.01%
C 6734 5875 5496 5496 81.62% 93.55%
D 6734 5875 4132 4132 61.36% 70.33%

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 14 238 138981 277.12 2115 2101 493.9
A 0 50 94434 186.93 2115 2101 493.9
A 12 32 81764 161.28 2115 2101 493.9
B 3 28 784570 1558.01 2148 2133 502.2
B 3 11 471071 933.76 2148 2133 502.2
B 3 44 167741 329.76 2148 2133 502.2
C 8 146 4178065 12756.5 1115 1151 327.4
C 8 162 3888221 11871.31 1115 1151 327.4
C 8 81 1770554 5403.84 1115 1151 327.4
D 15 50 3461784 6653.19 1718 1744 520.1
D 15 194 2101879 4038.28 1718 1744 520.1
D 15 35 1174113 2254.31 1718 1744 520.1

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
Veto Counter