ASTROSAT CZTI

Data Quality Report

Orbit 26159

Creation date: 2024-06-27T19:25:31.097055
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/AS1A09_138T04_9000003776_26159cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26159cztM0_level2_quad_clean.evt
Size (bytes)470,831,04084,536,640
Size449.0 MB 80.6 MB
Events in quadrant A3,088,890533,836
Events in quadrant B3,046,323548,180
Events in quadrant C3,181,888525,057
Events in quadrant D4,517,532516,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130020
B0128370
C0132480
D0173090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62521041.663468%
B6253921.471294%
C62531171.871102%
D62534126.588837%

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 6922 6252 2 2 0.03% 0.03%
B 6923 6253 0 0 0.00% 0.00%
C 6923 6253 2 2 0.03% 0.03%
D 6923 6253 338 338 4.88% 5.41%

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 0 13 64248 406.34 777 761 156.2
A 6 16 30980 193.41 777 761 156.2
A 13 254 9709 57.27 777 761 156.2
B 12 111 17737 114.94 766 746 147.8
B 11 111 16396 105.86 766 746 147.8
B 14 111 14489 92.96 766 746 147.8
C 3 233 119480 682.26 745 751 174.0
C 14 238 119258 680.99 745 751 174.0
C 2 16 38749 218.35 745 751 174.0
D 12 233 1100101 6132.71 746 729 179.3
D 1 52 553673 3084.53 746 729 179.3
D 2 234 25456 137.94 746 729 179.3

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