ASTROSAT CZTI

Data Quality Report

Orbit 09771

Creation date: 2024-06-27T15:50:27.549375
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/AS1A03_080T01_9000001392_09771cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09771cztM0_level2_quad_clean.evt
Size (bytes)427,357,44066,686,400
Size407.6 MB 63.6 MB
Events in quadrant A3,023,367393,200
Events in quadrant B3,241,560400,284
Events in quadrant C3,022,354401,501
Events in quadrant D3,227,734385,242

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129893
B0135172
C0130062
D0135892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6294811.286940%
B62941161.843025%
C6294841.334604%
D62941011.604703%

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 7469 6295 0 0 0.00% 0.00%
B 7469 6295 2 2 0.03% 0.03%
C 7469 6295 0 0 0.00% 0.00%
D 7469 6295 16 16 0.21% 0.25%

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 8 15 12780 75.91 782 766 158.3
A 0 226 7061 39.77 782 766 158.3
A 12 194 6294 34.93 782 766 158.3
B 4 48 89557 597.75 787 768 148.5
B 10 245 40871 269.98 787 768 148.5
B 0 214 29162 191.16 787 768 148.5
C 13 61 5841 28.59 773 775 177.2
C 12 4 3757 16.83 773 775 177.2
C 8 222 2944 12.24 773 775 177.2
D 1 52 145267 785.06 763 744 184.1
D 8 195 42744 228.15 763 744 184.1
D 7 46 35156 186.93 763 744 184.1

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