ASTROSAT CZTI

Data Quality Report

Orbit 38253

Creation date: 2024-06-27T21:50:20.000816
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/AS1A07_145T01_9000005370_38253cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38253cztM0_level2_quad_clean.evt
Size (bytes)1,202,725,440257,169,600
Size1.1 GB 245.3 MB
Events in quadrant A8,782,5011,747,066
Events in quadrant B7,468,0271,784,187
Events in quadrant C8,002,0511,688,604
Events in quadrant D19,062,5451,488,784

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357275
B0328714
C0335664
D0676134

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15623360.230429%
B156231010.646483%
C15623620.396851%
D1562311407.296934%

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 19802 15626 15 15 0.08% 0.10%
B 19802 15625 50 50 0.25% 0.32%
C 19802 15625 34 34 0.17% 0.22%
D 19802 15625 1222 1222 6.17% 7.82%

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 960067 2741.93 1733 1699 349.5
A 12 16 756494 2159.5 1733 1699 349.5
A 12 189 183198 519.27 1733 1699 349.5
B 5 172 374679 1139.09 1720 1673 327.5
B 15 35 91448 274.16 1720 1673 327.5
B 5 184 82302 246.23 1720 1673 327.5
C 15 214 649534 1648.9 1688 1697 392.9
C 14 254 501319 1271.66 1688 1697 392.9
C 9 236 112423 281.82 1688 1697 392.9
D 10 203 5917930 14755.06 1652 1603 401.0
D 12 235 4555199 11356.47 1652 1603 401.0
D 2 250 776240 1931.91 1652 1603 401.0

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