ASTROSAT CZTI

Data Quality Report

Orbit 20160815_G05_218T05_9000000602_level2

Creation date: 2017-10-18T00:16:57.404867
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/AS1G05_218T05_9000000602cztM0_level2.evt modeM0/AS1G05_218T05_9000000602cztM0_level2_quad_clean.evt
Size (bytes)5,024,995,200675,858,240
Size4.7 GB 644.5 MB
Events in quadrant A26,407,8434,332,085
Events in quadrant B27,070,4754,377,646
Events in quadrant C50,234,1963,951,621
Events in quadrant D44,771,9084,033,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01169790
B01177550
C01877350
D01718330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011200
B011200
C011200
D011200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5497517383.161437%
B549755000.909504%
C54974870215.829301%
D5497328485.180725%

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 78490 54984 101 101 0.13% 0.18%
B 78490 54986 50 50 0.06% 0.09%
C 78490 54985 6493 6493 8.27% 11.81%
D 78490 54984 2183 2183 2.78% 3.97%

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 8 15 737874 582.78 6266 6136 1255.6
A 14 111 735990 581.28 6266 6136 1255.6
A 0 50 585950 461.78 6266 6136 1255.6
B 4 80 998206 823.48 6365 6210 1204.6
B 14 167 896015 738.65 6365 6210 1204.6
B 15 204 224119 180.89 6365 6210 1204.6
C 14 48 27447029 20661.33 5752 5774 1328.1
C 1 16 260262 191.61 5752 5774 1328.1
C 9 237 54475 36.67 5752 5774 1328.1
D 11 132 13978685 9671.47 6031 5857 1444.7
D 13 235 4217036 2914.82 6031 5857 1444.7
D 2 136 1208426 832.37 6031 5857 1444.7

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