ASTROSAT CZTI

Data Quality Report

Orbit 44637

Creation date: 2024-06-27T23:04:45.253157
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/AS1A13_072T01_9000006008_44637cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44637cztM0_level2_quad_clean.evt
Size (bytes)936,852,480196,292,160
Size893.5 MB 187.2 MB
Events in quadrant A9,023,3751,315,007
Events in quadrant B5,955,4301,379,814
Events in quadrant C9,490,1961,244,107
Events in quadrant D9,234,4071,132,666

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379731
B0269951
C0374701
D0362911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126085534.386104%
B126094003.172337%
C126098756.939488%
D126099227.312237%

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 13398 12609 37 37 0.28% 0.29%
B 13399 12610 36 36 0.27% 0.29%
C 13399 12610 647 647 4.83% 5.13%
D 13399 12610 477 477 3.56% 3.78%

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 3229291 11112.03 1410 1379 290.5
A 10 248 203823 696.91 1410 1379 290.5
A 13 248 116178 395.19 1410 1379 290.5
B 0 183 156302 562.28 1401 1357 275.6
B 5 172 98229 351.54 1401 1357 275.6
B 0 189 73737 262.66 1401 1357 275.6
C 12 2 3976989 12763.06 1340 1349 311.5
C 14 254 212417 677.59 1340 1349 311.5
C 3 233 47441 147.97 1340 1349 311.5
D 1 52 1611239 4871.58 1342 1298 330.5
D 13 249 672947 2032.37 1342 1298 330.5
D 2 37 506703 1529.32 1342 1298 330.5

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