ASTROSAT CZTI

Data Quality Report

Orbit 20181215_T03_030T01_9000002574_level2

Creation date: 2018-12-18T15:58:12.222151
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_030T01_9000002574cztM0_level2_bc.evt modeM0/AS1T03_030T01_9000002574cztM0_level2_quad_clean.evt
Size (bytes)4,886,372,1601,461,159,360
Size4.6 GB 1.4 GB
Events in quadrant A22,622,8789,561,982
Events in quadrant B24,338,7479,597,776
Events in quadrant C25,482,4699,118,619
Events in quadrant D68,034,4998,414,813

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021700
B021700
C021700
D021700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02287300
B02350920
C02360120
D03808520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11059610360.936743%
B11059615731.422294%
C11059614841.341821%
D1105961228611.108901%

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 127386 110594 2 2 0.00% 0.00%
B 127386 110593 11 11 0.01% 0.01%
C 127386 110596 1 1 0.00% 0.00%
D 127386 110589 5216 5216 4.09% 4.72%

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 12 194 38890 26.03 5881 5767 1272.6
A 0 226 38692 25.87 5881 5767 1272.6
A 4 2 25139 15.22 5881 5767 1272.6
B 7 220 374319 333.91 5898 5757 1103.8
B 0 197 354244 315.72 5898 5757 1103.8
B 0 230 147940 128.81 5898 5757 1103.8
C 3 233 2609563 2007.04 5591 5564 1297.4
C 5 218 1057849 811.05 5591 5564 1297.4
C 14 128 128477 94.74 5591 5564 1297.4
D 11 176 28474687 22360.2 5530 5344 1273.2
D 1 52 8829332 6930.48 5530 5344 1273.2
D 13 232 5074833 3981.64 5530 5344 1273.2

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