ASTROSAT CZTI

Data Quality Report

Orbit 37337

Creation date: 2024-06-27T21:38:39.688549
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/AS1A11_030T02_9000005310_37337cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37337cztM0_level2_quad_clean.evt
Size (bytes)274,322,88026,991,360
Size261.6 MB 25.7 MB
Events in quadrant A1,761,163148,003
Events in quadrant B1,669,805149,720
Events in quadrant C2,134,082144,204
Events in quadrant D2,506,618129,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073651
B072191
C084491
D097041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3454120.347423%
B345460.173712%
C3454260.752750%
D34541745.037638%

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 3454 3454 6 6 0.17% 0.17%
B 3454 3454 2 2 0.06% 0.06%
C 3454 3454 21 21 0.61% 0.61%
D 3454 3454 154 154 4.46% 4.46%

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 165221 2042.67 391 384 80.7
A 13 248 33986 416.4 391 384 80.7
A 9 143 31335 383.55 391 384 80.7
B 0 190 43233 564.93 388 378 75.9
B 4 171 24336 315.82 388 378 75.9
B 5 172 19301 249.45 388 378 75.9
C 1 23 345485 3849.97 378 380 89.6
C 15 214 144555 1608.41 378 380 89.6
C 14 254 80001 888.25 378 380 89.6
D 10 253 404932 4392.01 373 363 92.1
D 2 249 276992 3003.09 373 363 92.1
D 12 235 176028 1907.02 373 363 92.1

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