ASTROSAT CZTI

Data Quality Report

Orbit 46170

Creation date: 2024-06-27T23:19:57.751660
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/AS1T05_194T01_9000006180_46170cztM0_level2.fits modeM0/AS1T05_194T01_9000006180_46170cztM0_level2_quad_clean.evt
Size (bytes)508,832,640107,778,240
Size485.3 MB 102.8 MB
Events in quadrant A6,224,519722,179
Events in quadrant B3,910,134759,171
Events in quadrant C2,991,570709,918
Events in quadrant D5,222,994634,282

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225442
B0156804
C0134132
D0199112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62752944.685259%
B62741392.215493%
C6274610.972266%
D62743165.036659%

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 7505 6276 95 95 1.27% 1.51%
B 7504 6275 58 58 0.77% 0.92%
C 7504 6275 40 40 0.53% 0.64%
D 7504 6275 253 253 3.37% 4.03%

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 3128920 21025.93 722 709 148.8
A 9 191 148837 995.63 722 709 148.8
A 7 3 55817 370.4 722 709 148.8
B 3 112 783059 5621.61 720 701 139.2
B 15 201 177161 1267.95 720 701 139.2
B 0 186 70145 498.99 720 701 139.2
C 14 254 228809 1404.62 694 698 162.4
C 12 2 21011 125.08 694 698 162.4
C 3 233 14924 87.6 694 698 162.4
D 1 52 1540203 8970.16 686 662 171.6
D 5 235 281679 1637.35 686 662 171.6
D 2 249 275792 1603.05 686 662 171.6

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