ASTROSAT CZTI

Data Quality Report

Orbit 20181001_A05_072T05_9000002394_level2

Creation date: 2018-10-03T10:36:48.322456
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_072T05_9000002394cztM0_level2_bc.evt modeM0/AS1A05_072T05_9000002394cztM0_level2_quad_clean.evt
Size (bytes)2,717,582,400993,617,280
Size2.5 GB 947.6 MB
Events in quadrant A18,496,4686,214,567
Events in quadrant B20,985,3586,316,921
Events in quadrant C16,444,7626,266,913
Events in quadrant D21,224,2946,114,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01671580
B01761970
C01607830
D01750020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015400
B015400
C015400
D015400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7558415432.041437%
B7558422562.984759%
C7558414051.858859%
D7558415762.085097%

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 87555 75585 74 74 0.08% 0.10%
B 87555 75584 122 122 0.14% 0.16%
C 87555 75585 1 1 0.00% 0.00%
D 87555 75580 114 114 0.13% 0.15%

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 15 174 2299123 2639.22 4031 3956 869.6
A 9 143 583997 666.99 4031 3956 869.6
A 15 239 83919 91.95 4031 3956 869.6
B 3 112 2016423 2614.87 4093 3994 769.6
B 0 189 690283 891.74 4093 3994 769.6
B 5 65 628904 811.98 4093 3994 769.6
C 3 233 898998 977.85 3961 3942 915.3
C 0 207 310414 334.82 3961 3942 915.3
C 13 61 23310 21.16 3961 3942 915.3
D 1 52 4198039 4546.07 4029 3895 922.6
D 10 70 892644 963.32 4029 3895 922.6
D 15 0 458818 493.09 4029 3895 922.6

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