ASTROSAT CZTI

Data Quality Report

Orbit 46594

Creation date: 2024-06-27T23:25:13.406273
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_092T03_9000006234_46594cztM0_level2.fits modeM0/AS1A13_092T03_9000006234_46594cztM0_level2_quad_clean.evt
Size (bytes)507,107,520108,097,920
Size483.6 MB 103.1 MB
Events in quadrant A6,625,479693,650
Events in quadrant B3,543,771732,232
Events in quadrant C3,190,465725,378
Events in quadrant D4,872,489637,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242762
B0151942
C0145452
D0191232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69455357.703384%
B69463845.528362%
C69461902.735387%
D69464466.420962%

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 7010 6947 55 55 0.78% 0.79%
B 7011 6948 21 21 0.30% 0.30%
C 7011 6948 1 1 0.01% 0.01%
D 7011 6948 176 176 2.51% 2.53%

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 3227840 19310.42 791 772 167.1
A 13 248 230913 1377.14 791 772 167.1
A 9 191 43128 253.45 791 772 167.1
B 5 172 86865 547.22 792 768 157.3
B 2 2 49680 310.88 792 768 157.3
B 0 190 48829 305.47 792 768 157.3
C 15 208 45501 237.92 791 792 187.9
C 14 254 33467 173.88 791 792 187.9
C 12 249 9020 43.79 791 792 187.9
D 1 52 797626 3998.98 787 759 199.3
D 13 249 387979 1943.22 787 759 199.3
D 2 120 179617 897.58 787 759 199.3

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