ASTROSAT CZTI

Data Quality Report

Orbit 20180512_G08_024T02_9000002094_level2

Creation date: 2018-05-14T18:25:14.708481
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/AS1G08_024T02_9000002094cztM0_level2_bc.evt modeM0/AS1G08_024T02_9000002094cztM0_level2_quad_clean.evt
Size (bytes)1,657,644,480575,593,920
Size1.5 GB 548.9 MB
Events in quadrant A9,320,7413,564,914
Events in quadrant B13,296,8853,566,154
Events in quadrant C10,247,6313,766,123
Events in quadrant D14,425,3223,605,538

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08660
B08660
C08660
D08660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0896550
B01056010
C0898700
D01053890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A427166061.418672%
B4271819744.621003%
C427184721.104921%
D427186111.430310%

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 51513 42718 0 0 0.00% 0.00%
B 51514 42719 60 60 0.12% 0.14%
C 51513 42719 1 1 0.00% 0.00%
D 51513 42719 28 28 0.05% 0.07%

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 143320 276.53 2359 2313 509.9
A 8 15 85048 162.25 2359 2313 509.9
A 9 143 43052 79.89 2359 2313 509.9
B 0 85 3494813 8000.68 2351 2291 436.5
B 10 244 594619 1356.91 2351 2291 436.5
B 0 219 52399 114.79 2351 2291 436.5
C 3 233 890268 1693.23 2381 2354 524.4
C 5 193 19486 32.67 2381 2354 524.4
C 5 96 15735 25.52 2381 2354 524.4
D 8 195 2958315 5501.61 2363 2299 537.3
D 1 52 1775853 3300.86 2363 2299 537.3
D 7 254 181360 333.26 2363 2299 537.3

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