ASTROSAT CZTI

Data Quality Report

Orbit 41933

Creation date: 2024-06-27T22:34:40.064167
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/AS1A12_099T03_9000005720_41933cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41933cztM0_level2_quad_clean.evt
Size (bytes)848,220,48058,582,080
Size808.9 MB 55.9 MB
Events in quadrant A10,333,595207,436
Events in quadrant B2,761,848598,238
Events in quadrant C3,582,318538,084
Events in quadrant D14,296,50346,701

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0344882
B0120522
C0139912
D0459922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5472368467.324561%
B5472921.681287%
C54723386.176901%
D5472510693.311404%

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 7084 5473 3100 3100 43.76% 56.64%
B 7084 5473 69 69 0.97% 1.26%
C 7084 5473 333 333 4.70% 6.08%
D 7084 5473 5037 5037 71.10% 92.03%

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 14 24 8832110 143959.99 293 286 61.3
A 10 83 357690 5825.74 293 286 61.3
A 13 6 6301 98.05 293 286 61.3
B 0 229 363937 3178.87 585 566 114.3
B 0 245 52412 453.56 585 566 114.3
B 5 255 35016 301.38 585 566 114.3
C 0 10 725620 5585.66 555 557 129.8
C 4 254 397662 3059.17 555 557 129.8
C 15 214 214227 1646.05 555 557 129.8
D 12 79 13036277 214629.86 243 235 60.7
D 13 249 147107 2418.15 243 235 60.7
D 12 6 31566 515.84 243 235 60.7

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