ASTROSAT CZTI

Data Quality Report

Orbit 20160221_T01_072T03_9000000340_level2

Creation date: 2018-05-17T02:51:06.115673
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/AS1T01_072T03_9000000340cztM0_level2.evt modeM0/AS1T01_072T03_9000000340cztM0_level2_quad_clean.evt
Size (bytes)11,853,391,6801,468,969,920
Size11.0 GB 1.4 GB
Events in quadrant A63,564,7609,490,027
Events in quadrant B88,860,5949,410,187
Events in quadrant C118,219,5248,045,907
Events in quadrant D79,722,5288,763,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026420
B026420
C026420
D026420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02879220
B03578980
C04453710
D03373180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12914115861.228115%
B12929860654.690714%
C1291772855822.107651%
D124311107888.678234%

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 146422 129152 156 156 0.11% 0.12%
B 146422 129309 7026 7026 4.80% 5.43%
C 146422 129190 27042 27042 18.47% 20.93%
D 146422 124325 11015 11015 7.52% 8.86%

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 3 127 4959213 1709.2 14574 14282 2893.1
A 15 175 1131132 386.04 14574 14282 2893.1
A 0 1 335192 110.92 14574 14282 2893.1
B 7 30 16625308 5978.14 14818 14484 2778.6
B 3 254 4500621 1614.54 14818 14484 2778.6
B 5 68 2276872 814.22 14818 14484 2778.6
C 3 143 19558308 6673.65 12552 12655 2928.8
C 3 14 11081980 3779.5 12552 12655 2928.8
C 3 63 8515108 2903.07 12552 12655 2928.8
D 3 191 21663562 7005.81 13289 13012 3090.4
D 7 111 2011037 646.53 13289 13012 3090.4
D 7 85 1586697 509.22 13289 13012 3090.4

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