ASTROSAT CZTI

Data Quality Report

Orbit 20170419_A03_084T01_9000001188_level2

Creation date: 2017-09-23T19:02:40.700418
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/AS1A03_084T01_9000001188cztM0_level2.evt modeM0/AS1A03_084T01_9000001188cztM0_level2_quad_clean.evt
Size (bytes)1,291,037,760174,761,280
Size1.2 GB 166.7 MB
Events in quadrant A7,826,2861,080,872
Events in quadrant B8,166,2371,094,779
Events in quadrant C8,018,6031,072,524
Events in quadrant D14,006,752940,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337220
B0343080
C0348100
D0526660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159983992.494062%
B159984262.662833%
C159984482.800350%
D15998239614.976872%

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 28952 16006 6 6 0.02% 0.04%
B 28952 16006 16 16 0.06% 0.10%
C 28952 16006 48 48 0.17% 0.30%
D 28952 16004 2069 2069 7.15% 12.93%

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 15 236 93968 231.98 1949 1903 396.9
A 14 111 77680 190.94 1949 1903 396.9
A 2 79 50612 122.73 1949 1903 396.9
B 0 214 252813 666.02 1955 1902 376.7
B 4 81 90981 236.45 1955 1902 376.7
B 10 16 83310 216.09 1955 1902 376.7
C 9 68 620566 1410.57 1889 1893 438.6
C 13 61 14252 28.18 1889 1893 438.6
C 8 128 14142 27.93 1889 1893 438.6
D 1 52 5029210 11873.01 1719 1664 423.4
D 12 221 1626881 3838.1 1719 1664 423.4
D 6 225 353236 830.27 1719 1664 423.4

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