ASTROSAT CZTI

Data Quality Report

Orbit 40798

Creation date: 2024-06-27T22:20:40.298304
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_9000005570_40798cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40798cztM0_level2_quad_clean.evt
Size (bytes)340,024,32092,465,280
Size324.3 MB 88.2 MB
Events in quadrant A3,029,236616,718
Events in quadrant B2,845,747640,903
Events in quadrant C2,764,598607,012
Events in quadrant D3,505,913539,145

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122953
B0122532
C0117972
D0145452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5662180.317909%
B5662400.706464%
C5662450.794772%
D56622824.980572%

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 7095 5663 5 5 0.07% 0.09%
B 7095 5663 22 22 0.31% 0.39%
C 7095 5663 40 40 0.56% 0.71%
D 7095 5663 304 304 4.28% 5.37%

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 10 83 522480 4072.17 623 609 128.2
A 12 189 45955 353.84 623 609 128.2
A 6 10 21287 161.35 623 609 128.2
B 5 255 353008 2912.85 618 600 121.0
B 0 230 46018 375.4 618 600 121.0
B 0 190 17610 140.6 618 600 121.0
C 15 214 246553 1731.61 605 607 142.0
C 0 10 133660 936.77 605 607 142.0
C 3 233 21143 144.59 605 607 142.0
D 12 233 771097 5350.76 595 577 144.0
D 13 249 228103 1580.02 595 577 144.0
D 2 153 125609 868.26 595 577 144.0

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