ASTROSAT CZTI

Data Quality Report

Orbit 20160105_P01_162T08_9000000248_level2

Creation date: 2017-10-31T17:31:59.732360
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/AS1P01_162T08_9000000248cztM0_level2.evt modeM0/AS1P01_162T08_9000000248cztM0_level2_quad_clean.evt
Size (bytes)3,299,518,080204,451,200
Size3.1 GB 195.0 MB
Events in quadrant A24,272,2651,224,871
Events in quadrant B28,127,7281,225,090
Events in quadrant C23,738,1781,201,761
Events in quadrant D22,482,2321,174,075

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860670
B0975140
C0846260
D0809940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19828670.337906%
B198283751.891265%
C19828570.287472%
D198282111.064152%

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 20718 19832 914 914 4.41% 4.61%
B 20718 19832 2384 2384 11.51% 12.02%
C 20718 19832 751 751 3.62% 3.79%
D 20718 19832 844 844 4.07% 4.26%

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 15 127 278211 182.67 6157 6204 1489.0
A 13 17 147069 94.6 6157 6204 1489.0
A 4 32 86586 53.98 6157 6204 1489.0
B 8 4 1246482 828.17 6414 6450 1497.3
B 6 53 562210 371.17 6414 6450 1497.3
B 5 249 490773 323.46 6414 6450 1497.3
C 15 241 688062 420.48 5830 6032 1622.0
C 3 79 115192 67.3 5830 6032 1622.0
C 3 111 82922 47.4 5830 6032 1622.0
D 5 190 274350 153.45 5619 5839 1749.8
D 9 66 235818 131.43 5619 5839 1749.8
D 9 53 212120 117.89 5619 5839 1749.8

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