ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_889T01_9000000138_level2

Creation date: 2016-09-06T17:58:18.755089
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/AS1P01_889T01_9000000138cztM0_level2_bc.evt modeM0/AS1P01_889T01_9000000138cztM0_level2_quad_clean.evt
Size (bytes)54,895,68030,150,720
Size52.4 MB 28.8 MB
Events in quadrant A339,941193,551
Events in quadrant B403,322192,301
Events in quadrant C353,007189,417
Events in quadrant D418,342189,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078010
B082350
C072150
D071010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204100.000000%
B204110.048996%
C204100.000000%
D204120.097991%

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 2041 2041 0 0 0.00% 0.00%
B 2041 2041 0 0 0.00% 0.00%
C 2041 2041 0 0 0.00% 0.00%
D 2041 2041 1 1 0.05% 0.05%

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 0 117 8600 417.2 84 83 20.4
A 10 133 4534 218.03 84 83 20.4
A 14 170 421 16.56 84 83 20.4
B 0 220 41392 2253.52 86 83 18.3
B 5 200 3831 204.46 86 83 18.3
B 8 38 3627 193.33 86 83 18.3
C 3 79 8389 420.89 82 80 19.7
C 3 111 6375 318.87 82 80 19.7
C 8 208 5269 262.85 82 80 19.7
D 1 4 22171 1048.26 82 79 21.1
D 8 144 15102 712.84 82 79 21.1
D 2 16 13461 634.98 82 79 21.1

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