ASTROSAT CZTI

Data Quality Report

Orbit 26953

Creation date: 2024-06-27T19:34:52.808394
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/AS1A09_134T01_9000003896_26953cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26953cztM0_level2_quad_clean.evt
Size (bytes)689,820,48062,291,520
Size657.9 MB 59.4 MB
Events in quadrant A3,294,809388,749
Events in quadrant B8,591,320322,488
Events in quadrant C3,398,203387,978
Events in quadrant D5,198,956363,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130650
B0298000
C0134710
D0193870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6039600.993542%
B6040142023.509934%
C60401292.135762%
D60404968.211921%

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 7389 6040 18 18 0.24% 0.30%
B 7390 6041 1044 1044 14.13% 17.28%
C 7390 6040 8 8 0.11% 0.13%
D 7390 6041 423 423 5.72% 7.00%

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 14 235 108045 666.54 816 801 160.9
A 8 192 25768 155.17 816 801 160.9
A 0 13 18069 107.32 816 801 160.9
B 0 189 5458775 38822.22 764 749 140.6
B 3 112 95390 673.17 764 749 140.6
B 0 219 20172 138.15 764 749 140.6
C 14 238 132201 722.62 798 807 181.8
C 2 16 112421 613.84 798 807 181.8
C 0 207 33387 179.18 798 807 181.8
D 1 52 1742936 9590.03 777 758 181.7
D 2 250 241880 1327.29 777 758 181.7
D 12 1 204308 1120.47 777 758 181.7

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