ASTROSAT CZTI

Data Quality Report

Orbit 20180622_A04_022T02_9000002184_level2

Creation date: 2018-06-28T17:22:34.979550
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_022T02_9000002184cztM0_level2_bc.evt modeM0/AS1A04_022T02_9000002184cztM0_level2_quad_clean.evt
Size (bytes)4,892,443,2001,648,958,400
Size4.6 GB 1.5 GB
Events in quadrant A29,194,95910,491,335
Events in quadrant B41,112,73710,283,534
Events in quadrant C39,803,08410,274,497
Events in quadrant D29,366,87710,147,545

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025980
B025980
C025980
D025980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02715430
B03222480
C03132890
D02731630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12769014311.120683%
B12769061634.826533%
C12769017911.402616%
D12769014141.107369%

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 146102 127698 13 13 0.01% 0.01%
B 146102 127691 449 449 0.31% 0.35%
C 146102 127695 40 40 0.03% 0.03%
D 146102 127693 125 125 0.09% 0.10%

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 1506898 1035.38 6648 6518 1449.1
A 14 237 736250 503.57 6648 6518 1449.1
A 0 23 404751 274.81 6648 6518 1449.1
B 10 16 8029965 6529.74 6507 6341 1228.8
B 3 64 4081527 3316.44 6507 6341 1228.8
B 0 219 1153488 933.56 6507 6341 1228.8
C 3 233 12395457 8876.94 6368 6277 1395.7
C 4 254 1967021 1404.89 6368 6277 1395.7
C 0 207 244770 170.88 6368 6277 1395.7
D 15 0 2148542 1300.14 6484 6303 1647.7
D 10 70 525302 314.99 6484 6303 1647.7
D 2 234 501442 300.5 6484 6303 1647.7

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