ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_889T01_9000000166_level2

Creation date: 2016-09-06T17:57:58.621533
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_9000000166cztM0_level2_bc.evt modeM0/AS1P01_889T01_9000000166cztM0_level2_quad_clean.evt
Size (bytes)69,865,92025,597,440
Size66.6 MB 24.4 MB
Events in quadrant A304,611175,612
Events in quadrant B948,923129,333
Events in quadrant C315,767173,621
Events in quadrant D420,630169,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068190
B0120250
C064020
D064020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172220.116144%
B172262436.236934%
C172210.058072%
D172220.116144%

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 1721 1721 0 0 0.00% 0.00%
B 1721 1721 1 1 0.06% 0.06%
C 1720 1720 0 0 0.00% 0.00%
D 1721 1721 0 0 0.00% 0.00%

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 15 249 1791 94.52 77 76 18.1
A 15 127 986 50.15 77 76 18.1
A 12 133 836 41.89 77 76 18.1
B 3 0 661962 50215.57 58 57 13.2
B 8 38 23707 1794.21 58 57 13.2
B 0 220 13889 1049.37 58 57 13.2
C 15 241 4670 254.74 76 74 18.0
C 3 143 4231 230.41 76 74 18.0
C 3 111 2361 126.76 76 74 18.0
D 2 107 67303 3660.54 76 74 18.4
D 1 4 27931 1516.78 76 74 18.4
D 13 170 13798 747.26 76 74 18.4

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