ASTROSAT CZTI

Data Quality Report

Orbit 30598

Creation date: 2024-06-27T20:17:28.114228
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_058T03_9000004408_30598cztM0_level2.evt modeM0/AS1A10_058T03_9000004408_30598cztM0_level2_quad_clean.evt
Size (bytes)624,718,08068,048,640
Size595.8 MB 64.9 MB
Events in quadrant A3,431,943418,927
Events in quadrant B5,263,562416,053
Events in quadrant C4,015,182394,859
Events in quadrant D5,779,168386,361

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140672
B0198913
C0163882
D0217852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6361600.943248%
B63601732.720126%
C63603715.833333%
D63601211.902516%

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 7606 6362 1 1 0.01% 0.02%
B 7605 6361 24 24 0.32% 0.38%
C 7605 6361 58 58 0.76% 0.91%
D 7605 6361 37 37 0.49% 0.58%

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 8 192 22152 122.42 884 870 173.8
A 13 254 11232 59.61 884 870 173.8
A 3 137 8105 41.62 884 870 173.8
B 6 159 1702133 10546.86 872 855 161.3
B 4 171 77904 477.65 872 855 161.3
B 0 229 50570 308.2 872 855 161.3
C 14 238 259703 1352.0 833 842 191.5
C 0 10 244960 1275.0 833 842 191.5
C 14 254 158205 821.89 833 842 191.5
D 8 195 2235249 11234.91 852 832 198.9
D 1 52 113235 565.17 852 832 198.9
D 13 249 106225 529.93 852 832 198.9

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