ASTROSAT CZTI

Data Quality Report

Orbit 20230613_A12_044T21_9000005688_level2

Creation date: 2023-06-15T13:46:26.854577
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_044T21_9000005688cztM0_level2.fits modeM0/AS1A12_044T21_9000005688cztM0_level2_quad_clean.evt
Size (bytes)425,831,040440,510,400
Size406.1 MB 420.1 MB
Events in quadrant A2,544,0262,651,216
Events in quadrant B2,444,3702,662,843
Events in quadrant C2,493,1202,508,896
Events in quadrant D2,121,4522,225,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09780
B09780
C09780
D09780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030840
B0980580
C0998110
D01241650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47983960.200071%
B479831340.279266%
C479833660.762770%
D4798323154.824625%

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 64022 47982 0 0 0.00% 0.00%
B 64022 47983 0 0 0.00% 0.00%
C 64022 47972 0 0 0.00% 0.00%
D 64021 47938 0 0 0.00% 0.00%

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 7 110 2119 8.82 663 618 170.2
A 0 29 2039 8.35 663 618 170.2
A 9 19 2001 8.13 663 618 170.2
B 2 9 2118 11.74 644 611 128.4
B 3 17 1803 9.29 644 611 128.4
B 3 80 1721 8.65 644 611 128.4
C 1 81 2089 8.72 657 613 169.2
C 1 80 1973 8.04 657 613 169.2
C 3 203 1965 7.99 657 613 169.2
D 7 3 1663 6.78 607 551 164.1
D 6 38 1536 6.0 607 551 164.1
D 10 113 1513 5.86 607 551 164.1

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