ASTROSAT CZTI

Data Quality Report

Orbit 46850

Creation date: 2024-06-27T23:28:28.315361
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/AS1A13_053T01_9000006274_46850cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46850cztM0_level2_quad_clean.evt
Size (bytes)486,610,560109,100,160
Size464.1 MB 104.0 MB
Events in quadrant A6,389,999738,523
Events in quadrant B3,770,516756,736
Events in quadrant C3,031,965726,381
Events in quadrant D4,321,999633,530

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232103
B0154651
C0135881
D0174081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64222143.332295%
B64221472.289007%
C6423671.043126%
D64234737.364160%

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 7587 6423 44 44 0.58% 0.69%
B 7587 6423 58 58 0.76% 0.90%
C 7588 6424 29 29 0.38% 0.45%
D 7588 6424 326 326 4.30% 5.07%

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 3403543 22198.99 740 725 153.3
A 7 3 92377 597.91 740 725 153.3
A 0 243 12006 73.59 740 725 153.3
B 3 112 519368 3650.96 733 712 142.1
B 0 200 203193 1425.32 733 712 142.1
B 0 198 46973 325.64 733 712 142.1
C 1 241 127937 761.35 718 722 167.1
C 14 254 71033 420.79 718 722 167.1
C 0 207 26578 154.74 718 722 167.1
D 13 249 1072812 6140.42 701 680 174.6
D 1 52 247923 1416.03 701 680 174.6
D 12 233 138592 789.86 701 680 174.6

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