ASTROSAT CZTI

Data Quality Report

Orbit 20181230_T03_027T01_9000002608_level2

Creation date: 2019-01-02T09:41:43.890268
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_027T01_9000002608cztM0_level2_bc.evt modeM0/AS1T03_027T01_9000002608cztM0_level2_quad_clean.evt
Size (bytes)1,159,574,400450,025,920
Size1.1 GB 429.2 MB
Events in quadrant A6,842,5312,921,347
Events in quadrant B6,987,7962,957,797
Events in quadrant C11,349,4152,809,722
Events in quadrant D7,813,2662,803,418

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650530
B0657900
C0872230
D0677790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06320
B06320
C06320
D06320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A311383721.194682%
B311384571.467660%
C311387312.347614%
D311383281.053375%

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 38373 31135 0 0 0.00% 0.00%
B 38373 31135 0 0 0.00% 0.00%
C 38373 31137 0 0 0.00% 0.00%
D 38373 31137 42 42 0.11% 0.13%

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 13 210 48119 121.38 1767 1737 382.1
A 0 13 21014 50.45 1767 1737 382.1
A 15 174 11835 26.43 1767 1737 382.1
B 0 183 62619 184.97 1783 1742 329.1
B 0 189 35924 103.86 1783 1742 329.1
B 4 80 26363 74.81 1783 1742 329.1
C 3 233 4648863 11977.17 1681 1677 388.0
C 5 218 231917 593.4 1681 1677 388.0
C 13 61 9956 21.34 1681 1677 388.0
D 13 168 480607 1203.36 1737 1680 398.0
D 1 52 261798 653.57 1737 1680 398.0
D 13 232 120696 299.04 1737 1680 398.0

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