ASTROSAT CZTI

Data Quality Report

Orbit 45182

Creation date: 2024-06-27T23:10:17.746319
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_049T05_9000006050_45182cztM0_level2.fits modeM0/AS1A13_049T05_9000006050_45182cztM0_level2_quad_clean.evt
Size (bytes)757,019,520161,593,920
Size722.0 MB 154.1 MB
Events in quadrant A7,884,6651,082,352
Events in quadrant B5,230,7321,134,022
Events in quadrant C4,878,8501,084,488
Events in quadrant D9,269,196912,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0311042
B0219772
C0209962
D0343682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98061861.896798%
B98071071.091057%
C98071211.233813%
D9807100310.227389%

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 11971 9808 37 37 0.31% 0.38%
B 11972 9809 37 37 0.31% 0.38%
C 11972 9809 84 84 0.70% 0.86%
D 11972 9809 855 855 7.14% 8.72%

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 3458293 15197.86 1106 1084 227.5
A 2 79 63053 272.42 1106 1084 227.5
A 10 248 31614 134.21 1106 1084 227.5
B 5 185 283542 1298.33 1117 1081 217.6
B 3 112 208997 955.68 1117 1081 217.6
B 4 170 194401 888.59 1117 1081 217.6
C 12 250 254176 972.1 1112 1116 260.3
C 14 220 126243 480.66 1112 1116 260.3
C 14 254 62406 235.44 1112 1116 260.3
D 13 249 3048929 11453.95 1061 1029 266.1
D 1 47 935457 3511.56 1061 1029 266.1
D 5 222 279931 1048.11 1061 1029 266.1

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