ASTROSAT CZTI

Data Quality Report

Orbit 20220820_A10_094T16_9000005298_level2

Creation date: 2022-08-25T17:30:13.555043
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/AS1A10_094T16_9000005298cztM0_level2_bc.evt modeM0/AS1A10_094T16_9000005298cztM0_level2_quad_clean.evt
Size (bytes)302,330,880128,741,760
Size288.3 MB 122.8 MB
Events in quadrant A1,676,782881,366
Events in quadrant B2,024,513881,744
Events in quadrant C1,857,552885,856
Events in quadrant D3,092,443742,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150650
B0169750
C0154250
D0258730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7288190.260703%
B72881502.058178%
C7288390.535126%
D7288139819.182217%

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 8631 7289 4 4 0.05% 0.05%
B 8631 7288 8 8 0.09% 0.11%
C 8631 7289 11 11 0.13% 0.15%
D 8631 7286 32 32 0.37% 0.44%

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 10 83 246800 3045.55 352 345 80.9
A 9 143 27795 339.21 352 345 80.9
A 15 222 16818 203.56 352 345 80.9
B 5 172 254848 3518.14 350 342 72.3
B 0 213 245178 3384.47 350 342 72.3
B 0 189 55384 760.87 350 342 72.3
C 15 214 284095 3445.76 347 343 82.3
C 1 23 101368 1226.8 347 343 82.3
C 14 254 59663 720.36 347 343 82.3
D 2 249 1401553 18359.94 307 296 76.3
D 13 249 329393 4311.99 307 296 76.3
D 2 234 30149 391.15 307 296 76.3

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