ASTROSAT CZTI

Data Quality Report

Orbit 14139

Creation date: 2024-06-27T16:50:51.120546
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/AS1A04_218T04_9000002086_14139cztM0_level2.evt modeM0/AS1A04_218T04_9000002086_14139cztM0_level2_quad_clean.evt
Size (bytes)472,152,96073,992,960
Size450.3 MB 70.6 MB
Events in quadrant A3,048,953458,709
Events in quadrant B3,150,347458,320
Events in quadrant C3,168,176464,042
Events in quadrant D4,515,797431,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127792
B0130561
C0128511
D0174751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6131460.750285%
B6131540.880770%
C6131300.489317%
D61312634.289675%

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 7307 6133 1 1 0.01% 0.02%
B 7307 6133 0 0 0.00% 0.00%
C 7307 6133 1 1 0.01% 0.02%
D 7307 6133 188 188 2.57% 3.07%

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 0 226 6951 39.19 788 774 157.6
A 12 189 6689 37.52 788 774 157.6
A 12 194 5967 32.94 788 774 157.6
B 0 214 42553 283.35 776 757 147.5
B 0 189 25201 165.71 776 757 147.5
B 12 111 17063 110.54 776 757 147.5
C 3 233 218760 1252.1 755 758 174.1
C 14 234 6490 32.92 755 758 174.1
C 13 61 5292 26.04 755 758 174.1
D 7 80 751866 4232.46 746 729 177.5
D 1 52 506821 2851.7 746 729 177.5
D 8 195 140938 790.04 746 729 177.5

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