ASTROSAT CZTI

Data Quality Report

Orbit 05025

Creation date: 2024-06-27T14:50:20.285084
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/AS1G05_250T02_9000000638_05025cztM0_level2.evt modeM0/AS1G05_250T02_9000000638_05025cztM0_level2_quad_clean.evt
Size (bytes)488,456,64068,408,640
Size465.8 MB 65.2 MB
Events in quadrant A3,300,790403,263
Events in quadrant B3,523,472395,813
Events in quadrant C3,464,117400,227
Events in quadrant D4,035,209390,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144423
B0149942
C0146702
D0167532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69011151.666425%
B69011321.912766%
C69011241.796841%
D69011862.695262%

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 7641 6902 0 0 0.00% 0.00%
B 7641 6902 0 0 0.00% 0.00%
C 7641 6902 0 0 0.00% 0.00%
D 7641 6902 54 54 0.71% 0.78%

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 4 2 50964 299.43 821 800 167.5
A 0 50 36861 215.25 821 800 167.5
A 0 247 28964 168.11 821 800 167.5
B 15 204 217280 1367.81 824 803 158.3
B 15 54 41539 257.39 824 803 158.3
B 0 219 38746 239.74 824 803 158.3
C 1 16 370041 2008.63 792 794 183.8
C 13 61 6634 31.77 792 794 183.8
C 14 67 2521 9.39 792 794 183.8
D 12 227 502273 2574.29 795 771 194.8
D 13 235 190097 971.84 795 771 194.8
D 2 33 121504 619.74 795 771 194.8

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