ASTROSAT CZTI

Data Quality Report

Orbit 20180508_A04_149T01_9000002082_level2

Creation date: 2018-05-10T16:26:06.460045
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A04_149T01_9000002082cztM0_level2_bc.evt modeM0/AS1A04_149T01_9000002082cztM0_level2_quad_clean.evt
Size (bytes)2,524,824,0001,123,320,960
Size2.4 GB 1.0 GB
Events in quadrant A14,091,7877,593,676
Events in quadrant B22,107,0987,372,809
Events in quadrant C15,350,2617,420,198
Events in quadrant D20,478,2907,174,050

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013240
B013240
C013240
D013240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01358660
B01736910
C01363470
D01544840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A651206571.008907%
B6512051297.876229%
C651205490.843059%
D6512013042.002457%

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 74751 65124 7 7 0.01% 0.01%
B 74751 65113 373 373 0.50% 0.57%
C 74751 65124 1 1 0.00% 0.00%
D 74751 65124 252 252 0.34% 0.39%

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 12 189 540284 709.73 3445 3385 756.5
A 12 96 132294 170.41 3445 3385 756.5
A 8 15 96690 123.34 3445 3385 756.5
B 0 85 6909413 10889.19 3346 3266 634.2
B 0 189 737676 1157.97 3346 3266 634.2
B 10 16 500281 783.66 3346 3266 634.2
C 3 233 2146874 2915.7 3325 3291 735.2
C 0 207 81767 106.74 3325 3291 735.2
C 10 22 58691 75.35 3325 3291 735.2
D 1 52 2866800 3633.85 3330 3236 788.0
D 8 195 1522906 1928.46 3330 3236 788.0
D 10 157 1202904 1522.37 3330 3236 788.0

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