ASTROSAT CZTI

Data Quality Report

Orbit 20190303_A05_103T02_9000002750_level2

Creation date: 2019-03-04T12:10:03.106455
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/AS1A05_103T02_9000002750cztM0_level2_bc.evt modeM0/AS1A05_103T02_9000002750cztM0_level2_quad_clean.evt
Size (bytes)677,047,680265,884,480
Size645.7 MB 253.6 MB
Events in quadrant A4,138,9681,670,435
Events in quadrant B4,201,1181,708,195
Events in quadrant C3,839,6201,668,003
Events in quadrant D6,936,6861,610,892

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422990
B0424970
C0415960
D0516190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04140
B04140
C04140
D04140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202613641.796555%
B202613711.831104%
C202613711.831104%
D202618053.973150%

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 22711 20257 2 2 0.01% 0.01%
B 22711 20257 4 4 0.02% 0.02%
C 22711 20257 0 0 0.00% 0.00%
D 22711 20259 99 99 0.44% 0.49%

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 0 13 194295 872.08 1011 986 221.7
A 13 254 31151 136.08 1011 986 221.7
A 15 174 14420 60.6 1011 986 221.7
B 7 220 73906 365.88 1028 997 199.3
B 15 222 39793 194.69 1028 997 199.3
B 3 64 27680 133.91 1028 997 199.3
C 3 233 13499 53.76 989 981 232.8
C 8 128 11382 44.67 989 981 232.8
C 7 247 6614 24.19 989 981 232.8
D 7 238 1657073 7143.89 1001 965 231.8
D 1 52 830611 3578.81 1001 965 231.8
D 15 0 185141 794.47 1001 965 231.8

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