ASTROSAT CZTI

Data Quality Report

Orbit 00979

Creation date: 2024-06-27T14:05:38.903383
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_998T01_9000000188_00979cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00979cztM0_level2_quad_clean.evt
Size (bytes)1,020,110,40093,571,200
Size972.9 MB 89.2 MB
Events in quadrant A7,918,767608,762
Events in quadrant B7,851,795613,438
Events in quadrant C7,382,634593,872
Events in quadrant D7,326,701581,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279660
B0277520
C0263130
D0262140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6246340.544348%
B6246360.576369%
C6246180.288184%
D6246400.640410%

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 7151 6247 332 332 4.64% 5.31%
B 7151 6247 230 230 3.22% 3.68%
C 7151 6247 125 125 1.75% 2.00%
D 7151 6247 259 259 3.62% 4.15%

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 14 170 552157 1196.15 1916 1932 460.0
A 12 189 7971 13.13 1916 1932 460.0
A 11 79 6798 10.58 1916 1932 460.0
B 5 249 58218 120.16 1992 2000 467.8
B 15 22 43594 88.91 1992 2000 467.8
B 4 200 31610 63.29 1992 2000 467.8
C 15 241 317050 634.77 1779 1834 496.6
C 9 52 33875 64.52 1779 1834 496.6
C 8 208 24475 45.59 1779 1834 496.6
D 1 4 620470 1171.55 1746 1803 528.1
D 0 244 65536 120.69 1746 1803 528.1
D 12 22 48578 88.58 1746 1803 528.1

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter