ASTROSAT CZTI

Data Quality Report

Orbit 28848

Creation date: 2024-06-27T19:57:08.756446
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/AS1A10_103T08_9000004136_28848cztM0_level2.evt modeM0/AS1A10_103T08_9000004136_28848cztM0_level2_quad_clean.evt
Size (bytes)702,031,680125,939,520
Size669.5 MB 120.1 MB
Events in quadrant A3,010,582909,506
Events in quadrant B3,652,282930,904
Events in quadrant C3,154,778897,854
Events in quadrant D11,043,451661,780

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124301
B0145611
C0128111
D0368461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5912170.287551%
B59131382.333841%
C5913961.623541%
D5913318953.932014%

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 7227 5912 0 0 0.00% 0.00%
B 7228 5913 68 68 0.94% 1.15%
C 7228 5913 2 2 0.03% 0.03%
D 7228 5913 3209 3209 44.40% 54.27%

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 5 98 19878 125.84 770 757 151.9
A 13 254 11649 71.69 770 757 151.9
A 12 16 7942 47.29 770 757 151.9
B 5 255 373603 2684.28 771 755 138.9
B 5 172 100170 715.73 771 755 138.9
B 0 156 38853 274.28 771 755 138.9
C 14 238 135329 773.01 759 769 174.1
C 3 233 25950 144.66 759 769 174.1
C 14 254 18687 102.93 759 769 174.1
D 8 195 6817473 46557.87 625 609 146.4
D 1 52 1787693 12205.44 625 609 146.4
D 2 250 45109 303.93 625 609 146.4

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