ASTROSAT CZTI

Data Quality Report

Orbit 20240401_A13_033T02_9000006154_level2

Creation date: 2024-04-03T13:31:41.371766
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_033T02_9000006154cztM0_level2.fits modeM0/AS1A13_033T02_9000006154cztM0_level2_quad_clean.evt
Size (bytes)480,156,480502,966,080
Size457.9 MB 479.7 MB
Events in quadrant A2,861,6203,042,677
Events in quadrant B2,545,3862,667,017
Events in quadrant C2,934,6263,076,122
Events in quadrant D2,496,5542,749,253

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0770
B0770
C0770
D0770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010900
B010900
C010880
D010890

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01734350
B02481120
C01175000
D01398430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5389313932.584751%
B538601217422.603045%
C538947271.348944%
D5388319913.695043%

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 73117 53912 0 0 0.00% 0.00%
B 73118 53881 0 0 0.00% 0.00%
C 73118 53884 0 0 0.00% 0.00%
D 73118 53871 0 0 0.00% 0.00%

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 7 110 2282 8.28 744 692 192.0
A 15 236 2278 8.26 744 692 192.0
A 0 29 2179 7.75 744 692 192.0
B 2 9 2373 12.76 671 635 136.2
B 2 8 1870 9.07 671 635 136.2
B 3 17 1709 7.89 671 635 136.2
C 1 81 2247 7.57 775 722 201.5
C 3 202 2225 7.46 775 722 201.5
C 1 80 2140 7.04 775 722 201.5
D 4 250 1923 6.37 715 648 199.9
D 10 189 1857 6.04 715 648 199.9
D 7 3 1838 5.95 715 648 199.9

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