ASTROSAT CZTI

Data Quality Report

Orbit 47077

Creation date: 2024-06-27T23:31:26.615828
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/AS1C09_003T01_9000006298_47077cztM0_level2.fits modeM0/AS1C09_003T01_9000006298_47077cztM0_level2_quad_clean.evt
Size (bytes)594,103,680111,196,800
Size566.6 MB 106.0 MB
Events in quadrant A6,582,824753,994
Events in quadrant B5,898,818725,986
Events in quadrant C3,820,096729,021
Events in quadrant D5,128,560653,227

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241021
B0227221
C0168901
D0206901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72471592.194011%
B72476118.431075%
C72471361.876639%
D72475597.713537%

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 7697 7249 7 7 0.09% 0.10%
B 7697 7249 359 359 4.66% 4.95%
C 7697 7249 125 125 1.62% 1.72%
D 7697 7249 421 421 5.47% 5.81%

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 3593519 22582.39 763 745 159.1
A 13 248 14603 87.1 763 745 159.1
A 13 254 13151 77.97 763 745 159.1
B 3 112 2423591 16686.68 741 716 145.2
B 5 172 246779 1694.67 741 716 145.2
B 5 32 78137 533.21 741 716 145.2
C 15 208 784542 4444.74 744 747 176.3
C 14 254 77128 433.14 744 747 176.3
C 12 250 37771 209.96 744 747 176.3
D 13 249 1332612 7298.44 727 704 182.5
D 1 47 573499 3138.74 727 704 182.5
D 1 52 137350 748.78 727 704 182.5

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