ASTROSAT CZTI

Data Quality Report

Orbit 33768

Creation date: 2024-06-27T20:52:26.765925
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/AS1A11_086T01_9000004820_33768cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33768cztM0_level2_quad_clean.evt
Size (bytes)765,250,56051,001,920
Size729.8 MB 48.6 MB
Events in quadrant A10,078,559239,987
Events in quadrant B3,805,895308,155
Events in quadrant C3,114,720317,191
Events in quadrant D5,809,529296,639

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337383
B0148482
C0123622
D0211092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5444287052.718589%
B54442704.959589%
C5444330.606172%
D54444297.880235%

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 7238 5445 2612 2612 36.09% 47.97%
B 7238 5445 197 197 2.72% 3.62%
C 7238 5445 27 27 0.37% 0.50%
D 7238 5445 456 456 6.30% 8.37%

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 15 169 6210773 57317.8 543 534 108.3
A 15 237 1735993 16017.53 543 534 108.3
A 13 6 18250 163.51 543 534 108.3
B 5 172 644382 5090.66 666 650 126.5
B 0 189 171496 1351.06 666 650 126.5
B 5 255 147991 1165.18 666 650 126.5
C 15 214 239140 1568.45 664 671 152.0
C 0 10 129183 845.24 664 671 152.0
C 9 187 50462 327.48 664 671 152.0
D 8 195 1318874 8167.79 655 636 161.4
D 2 249 884035 5473.53 655 636 161.4
D 1 47 418466 2588.87 655 636 161.4

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