ASTROSAT CZTI

Data Quality Report

Orbit 36212

Creation date: 2022-06-09T20:57:56.064253
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_080T02_9000005176_36212cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36212cztM0_level2_quad_clean.evt
Size (bytes)688,026,24069,690,240
Size656.2 MB 66.5 MB
Events in quadrant A2,860,136473,478
Events in quadrant B3,141,677467,531
Events in quadrant C6,670,931379,683
Events in quadrant D7,788,787399,022

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120823
B0129772
C0233902
D0270332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5561120.215789%
B55611582.841216%
C5561138024.815681%
D5561106919.223161%

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 7144 5562 1 1 0.01% 0.02%
B 7144 5562 110 110 1.54% 1.98%
C 7144 5562 1225 1225 17.15% 22.02%
D 7143 5561 1024 1024 14.34% 18.41%

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 15 223 185142 1443.8 630 617 127.8
A 10 83 182256 1421.22 630 617 127.8
A 9 143 39390 303.38 630 617 127.8
B 5 172 492601 4162.84 620 603 118.2
B 4 232 51081 427.1 620 603 118.2
B 0 197 47909 400.26 620 603 118.2
C 4 254 3895321 30055.0 552 556 129.6
C 0 10 330273 2544.35 552 556 129.6
C 15 214 212048 1632.04 552 556 129.6
D 12 235 4739775 32918.01 585 568 144.0
D 12 6 325263 2255.3 585 568 144.0
D 12 227 124453 860.49 585 568 144.0

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