ASTROSAT CZTI

Data Quality Report

Orbit 46998

Creation date: 2024-06-27T23:30:32.031022
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_006T01_9000006294_46998cztM0_level2.fits modeM0/AS1C09_006T01_9000006294_46998cztM0_level2_quad_clean.evt
Size (bytes)661,993,92084,867,840
Size631.3 MB 80.9 MB
Events in quadrant A5,741,184645,096
Events in quadrant B11,808,253280,597
Events in quadrant C3,233,883636,410
Events in quadrant D3,261,082593,058

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212921
B0391501
C0138571
D0138191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59312854.805260%
B5931394366.481200%
C59322343.944707%
D59321542.596089%

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 6916 5932 0 0 0.00% 0.00%
B 6916 5931 3391 3391 49.03% 57.17%
C 6917 5932 159 159 2.30% 2.68%
D 6917 5933 54 54 0.78% 0.91%

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 3083699 21784.17 675 660 141.5
A 0 243 18282 124.51 675 660 141.5
A 9 191 14203 95.69 675 660 141.5
B 3 112 9508805 91810.81 525 508 103.6
B 0 198 90478 868.73 525 508 103.6
B 4 171 83215 798.6 525 508 103.6
C 14 254 584217 3722.78 667 669 156.8
C 3 233 21591 133.47 667 669 156.8
C 1 3 12063 72.69 667 669 156.8
D 1 52 270651 1595.82 676 656 169.2
D 13 249 193979 1142.64 676 656 169.2
D 12 233 46173 269.03 676 656 169.2

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