ASTROSAT CZTI

Data Quality Report

Orbit 44019

Creation date: 2024-06-27T22:58:21.859531
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/AS1A13_023T01_9000005932_44019cztM0_level2.fits modeM0/AS1A13_023T01_9000005932_44019cztM0_level2_quad_clean.evt
Size (bytes)671,915,520155,367,360
Size640.8 MB 148.2 MB
Events in quadrant A6,790,6191,036,913
Events in quadrant B4,917,7451,073,228
Events in quadrant C5,671,6151,022,699
Events in quadrant D6,736,512895,424

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274452
B0209402
C0235133
D0266672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97502362.420513%
B97501331.364103%
C97491081.107806%
D97495485.621089%

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 11150 9752 58 58 0.52% 0.59%
B 11150 9752 6 6 0.05% 0.06%
C 11149 9751 53 53 0.48% 0.54%
D 11149 9751 426 426 3.82% 4.37%

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 10 83 1703102 7428.05 1101 1075 229.1
A 14 238 465672 2027.61 1101 1075 229.1
A 15 222 305902 1330.34 1101 1075 229.1
B 2 2 243319 1113.12 1104 1069 217.6
B 3 112 145274 662.61 1104 1069 217.6
B 4 171 63722 287.88 1104 1069 217.6
C 3 233 1000266 3925.91 1078 1082 254.5
C 14 254 393779 1542.95 1078 1082 254.5
C 15 1 51102 196.53 1078 1082 254.5
D 1 52 953015 3611.84 1049 1015 263.6
D 13 249 548380 2076.68 1049 1015 263.6
D 12 18 357472 1352.38 1049 1015 263.6

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