ASTROSAT CZTI

Data Quality Report

Orbit 20190108_T03_070T03_9000002636_level2

Creation date: 2019-01-09T14:30:59.304021
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_070T03_9000002636cztM0_level2_bc.evt modeM0/AS1T03_070T03_9000002636cztM0_level2_quad_clean.evt
Size (bytes)296,176,320110,136,960
Size282.5 MB 105.0 MB
Events in quadrant A1,898,378691,949
Events in quadrant B2,259,244669,780
Events in quadrant C1,936,353663,905
Events in quadrant D2,229,370660,064

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193350
B0212860
C0194350
D0204160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9364680.726185%
B93643313.534814%
C93641081.153353%
D93641191.270824%

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 11374 9363 0 0 0.00% 0.00%
B 11374 9364 30 30 0.26% 0.32%
C 11374 9365 0 0 0.00% 0.00%
D 11374 9364 10 10 0.09% 0.11%

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 15 191 43835 402.08 479 468 107.9
A 15 174 16674 150.26 479 468 107.9
A 0 226 3180 25.14 479 468 107.9
B 4 142 263930 2829.44 472 460 93.1
B 10 245 95209 1017.52 472 460 93.1
B 0 197 28804 304.39 472 460 93.1
C 5 218 91025 814.26 463 459 111.2
C 3 233 34896 309.61 463 459 111.2
C 5 219 10380 89.2 463 459 111.2
D 1 52 283333 2368.07 472 457 119.5
D 2 234 40053 331.47 472 457 119.5
D 7 238 26377 216.99 472 457 119.5

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