ASTROSAT CZTI

Data Quality Report

Orbit 29957

Creation date: 2024-06-27T20:09:10.840536
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_058T01_9000004298_29957cztM0_level2.evt modeM0/AS1A10_058T01_9000004298_29957cztM0_level2_quad_clean.evt
Size (bytes)630,273,60089,285,760
Size601.1 MB 85.1 MB
Events in quadrant A3,181,794580,834
Events in quadrant B5,220,297570,363
Events in quadrant C6,252,996536,626
Events in quadrant D3,976,886545,949

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137762
B0204642
C0234332
D0161162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6740360.534125%
B67401171.735905%
C67405898.738872%
D67411341.987836%

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 7165 6741 0 0 0.00% 0.00%
B 7165 6741 11 11 0.15% 0.16%
C 7165 6741 137 137 1.91% 2.03%
D 7166 6742 68 68 0.95% 1.01%

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 13 254 13814 78.62 819 801 165.5
A 8 192 13243 75.17 819 801 165.5
A 3 137 8161 44.46 819 801 165.5
B 6 159 1961368 12662.76 806 785 154.8
B 3 64 53662 341.52 806 785 154.8
B 12 111 18828 116.53 806 785 154.8
C 3 233 3126353 17551.31 762 764 178.1
C 14 238 126632 706.79 762 764 178.1
C 2 114 15510 82.8 762 764 178.1
D 8 195 401697 2160.99 785 763 185.5
D 2 250 194125 1042.2 785 763 185.5
D 13 104 189925 1019.56 785 763 185.5

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