ASTROSAT CZTI

Data Quality Report

Orbit 20190117_T03_075T01_9000002660_level2

Creation date: 2019-01-21T10:29:54.953645
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/AS1T03_075T01_9000002660cztM0_level2_bc.evt modeM0/AS1T03_075T01_9000002660cztM0_level2_quad_clean.evt
Size (bytes)3,667,694,4001,524,015,360
Size3.4 GB 1.4 GB
Events in quadrant A23,710,1679,584,009
Events in quadrant B24,958,0679,858,094
Events in quadrant C24,053,8619,480,279
Events in quadrant D30,428,6149,273,048

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023700
B023700
C023700
D023700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02426440
B02463560
C02452310
D02654490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11624316401.410838%
B11624320231.740320%
C11624322551.939902%
D11624329482.536067%

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 133683 116251 6 6 0.00% 0.01%
B 133683 116244 9 9 0.01% 0.01%
C 133683 116247 10 10 0.01% 0.01%
D 133683 116240 268 268 0.20% 0.23%

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 15 174 241290 179.11 6062 5943 1314.0
A 6 16 188470 138.91 6062 5943 1314.0
A 12 194 39310 25.39 6062 5943 1314.0
B 0 189 237803 199.97 6177 6010 1159.1
B 15 222 223165 187.34 6177 6010 1159.1
B 4 216 132807 109.39 6177 6010 1159.1
C 3 233 1009718 733.4 5919 5889 1368.7
C 9 54 119554 83.04 5919 5889 1368.7
C 5 218 97955 67.26 5919 5889 1368.7
D 7 238 4134016 2762.75 5939 5751 1494.3
D 12 110 753157 500.18 5939 5751 1494.3
D 13 168 566183 375.06 5939 5751 1494.3

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