ASTROSAT CZTI

Data Quality Report

Orbit 37218

Creation date: 2024-06-27T21:37:03.441235
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_079T01_9000005284_37218cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37218cztM0_level2_quad_clean.evt
Size (bytes)460,546,56096,102,720
Size439.2 MB 91.7 MB
Events in quadrant A3,164,522652,138
Events in quadrant B3,055,988658,103
Events in quadrant C3,383,484640,721
Events in quadrant D3,988,306592,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124953
B0122502
C0131082
D0151942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5239951.813323%
B52391192.271426%
C52391462.786791%
D52393276.241649%

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 7361 5240 80 80 1.09% 1.53%
B 7361 5240 65 65 0.88% 1.24%
C 7361 5240 112 112 1.52% 2.14%
D 7361 5240 262 262 3.56% 5.00%

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 15 237 313128 2356.98 661 649 132.6
A 10 83 261392 1966.74 661 649 132.6
A 9 143 11260 80.04 661 649 132.6
B 5 172 403691 3288.13 646 630 122.6
B 0 213 79208 641.03 646 630 122.6
B 12 111 14860 116.09 646 630 122.6
C 14 254 492900 3370.36 631 636 146.1
C 15 214 226080 1543.54 631 636 146.1
C 0 10 186139 1270.07 631 636 146.1
D 2 249 1026081 6777.36 627 614 151.3
D 1 52 237016 1562.39 627 614 151.3
D 13 249 102764 675.11 627 614 151.3

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