ASTROSAT CZTI

Data Quality Report

Orbit 39956

Creation date: 2024-06-27T22:10:34.902734
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/AS1C07_001T01_9000005514_39956cztM0_level2.fits modeM0/AS1C07_001T01_9000005514_39956cztM0_level2_quad_clean.evt
Size (bytes)317,736,00084,600,000
Size303.0 MB 80.7 MB
Events in quadrant A2,723,341579,238
Events in quadrant B2,568,228581,221
Events in quadrant C2,398,935547,825
Events in quadrant D3,673,376495,806

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111452
B0112151
C0104851
D0144871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5102150.294002%
B5102671.313211%
C5102120.235202%
D51022074.057232%

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 7075 5103 5 5 0.07% 0.10%
B 7075 5103 44 44 0.62% 0.86%
C 7075 5103 10 10 0.14% 0.20%
D 7075 5103 205 205 2.90% 4.02%

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 474534 4224.54 552 541 112.2
A 6 10 66122 584.5 552 541 112.2
A 7 3 16887 145.69 552 541 112.2
B 4 171 152787 1473.54 541 525 103.3
B 5 32 100794 970.37 541 525 103.3
B 0 230 48262 461.98 541 525 103.3
C 15 214 217940 1777.17 530 533 122.3
C 0 10 60704 491.86 530 533 122.3
C 9 54 11683 91.14 530 533 122.3
D 2 249 620860 4776.97 526 509 129.9
D 12 227 456429 3510.78 526 509 129.9
D 12 218 154099 1182.71 526 509 129.9

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