ASTROSAT CZTI

Data Quality Report

Orbit 38256

Creation date: 2024-06-27T21:50:21.753586
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_38256cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38256cztM0_level2_quad_clean.evt
Size (bytes)437,601,60089,631,360
Size417.3 MB 85.5 MB
Events in quadrant A3,358,759617,300
Events in quadrant B2,473,483636,791
Events in quadrant C2,810,347605,881
Events in quadrant D7,140,707479,298

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133343
B0109742
C0116922
D0251742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5347681.271741%
B5347130.243127%
C5347200.374042%
D534794617.692164%

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 7110 5348 27 27 0.38% 0.50%
B 7110 5348 4 4 0.06% 0.07%
C 7110 5348 13 13 0.18% 0.24%
D 7110 5348 996 996 14.01% 18.62%

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 465972 3899.53 597 585 119.3
A 10 83 394298 3298.96 597 585 119.3
A 12 189 88809 739.24 597 585 119.3
B 15 85 38614 330.14 596 582 115.2
B 5 172 38266 327.12 596 582 115.2
B 0 229 28283 240.46 596 582 115.2
C 15 214 225081 1633.66 587 592 137.4
C 9 236 221856 1610.19 587 592 137.4
C 14 254 21139 149.53 587 592 137.4
D 10 203 2129490 15630.77 558 543 136.2
D 12 235 2009052 14746.51 558 543 136.2
D 13 249 591268 4337.11 558 543 136.2

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