ASTROSAT CZTI

Data Quality Report

Orbit 20598

Creation date: 2024-06-27T18:17:14.970010
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/AS1A06_003T04_9000003046_20598cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20598cztM0_level2_quad_clean.evt
Size (bytes)571,668,48076,668,480
Size545.2 MB 73.1 MB
Events in quadrant A3,436,487485,010
Events in quadrant B3,790,734492,367
Events in quadrant C3,590,859474,794
Events in quadrant D6,073,819434,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143312
B0152122
C0147332
D0223052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62231071.719428%
B62231812.908565%
C62231712.747871%
D622364410.348706%

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 7533 6225 1 1 0.01% 0.02%
B 7533 6225 21 21 0.28% 0.34%
C 7533 6225 0 0 0.00% 0.00%
D 7533 6225 487 487 6.46% 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 12 16 48148 274.83 869 855 172.1
A 5 16 32470 183.72 869 855 172.1
A 12 194 14408 78.76 869 855 172.1
B 7 220 198024 1222.45 863 844 161.3
B 0 197 73085 447.87 863 844 161.3
B 0 190 68626 420.23 863 844 161.3
C 8 208 178167 912.0 840 849 194.4
C 14 238 132596 677.62 840 849 194.4
C 13 61 5971 26.34 840 849 194.4
D 5 222 2205088 10858.06 834 809 203.0
D 1 20 522419 2569.4 834 809 203.0
D 2 165 95949 468.65 834 809 203.0

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