ASTROSAT CZTI

Data Quality Report

Orbit 08295

Creation date: 2024-06-27T15:30:43.219101
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/AS1T01_163T01_9000001152_08295cztM0_level2.evt modeM0/AS1T01_163T01_9000001152_08295cztM0_level2_quad_clean.evt
Size (bytes)475,401,60099,357,120
Size453.4 MB 94.8 MB
Events in quadrant A3,616,786654,753
Events in quadrant B3,213,518659,419
Events in quadrant C3,320,079635,174
Events in quadrant D3,819,959620,814

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148332
B0135861
C0140371
D0154901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62882654.214377%
B62881392.210560%
C62881632.592239%
D62882103.339695%

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 7323 6288 55 55 0.75% 0.87%
B 7323 6289 1 1 0.01% 0.02%
C 7323 6289 74 74 1.01% 1.18%
D 7323 6288 22 22 0.30% 0.35%

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 0 23 565043 3592.55 774 757 157.1
A 0 226 45058 282.04 774 757 157.1
A 15 234 18234 111.27 774 757 157.1
B 0 214 98493 664.23 772 754 147.1
B 0 219 53661 359.55 772 754 147.1
B 11 51 22365 146.87 772 754 147.1
C 9 54 414279 2412.88 744 746 171.4
C 13 61 5637 28.54 744 746 171.4
C 9 68 3487 15.99 744 746 171.4
D 8 230 384206 2077.95 750 727 184.5
D 1 52 375829 2032.56 750 727 184.5
D 2 14 102051 549.04 750 727 184.5

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