ASTROSAT CZTI

Data Quality Report

Orbit 20151016_P01_126T01_9000000030_level2

Creation date: 2016-09-06T18:00:37.116519
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_126T01_9000000030cztM0_level2_bc.evt modeM0/AS1P01_126T01_9000000030cztM0_level2_quad_clean.evt
Size (bytes)1,548,662,400515,928,960
Size1.4 GB 492.0 MB
Events in quadrant A11,035,5433,086,054
Events in quadrant B9,855,2563,135,148
Events in quadrant C9,124,5483,060,624
Events in quadrant D13,509,2112,948,412

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02132360
B02075910
C01948810
D02013120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010080
B010080
C010080
D010080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01750
B01750
C01750
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494922090.422290%
B49492420.084862%
C49492660.133355%
D494927851.586115%

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 66635 49491 100 100 0.15% 0.20%
B 66635 49491 7 7 0.01% 0.01%
C 66635 49491 21 21 0.03% 0.04%
D 66635 49491 44 44 0.07% 0.09%

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 12 149 1541809 3530.83 2092 2047 436.1
A 15 127 508120 1160.48 2092 2047 436.1
A 8 65 250375 569.44 2092 2047 436.1
B 5 176 410832 1062.17 2157 2092 384.8
B 5 46 206509 531.21 2157 2092 384.8
B 0 157 137809 352.68 2157 2092 384.8
C 14 48 413623 939.83 2071 2031 437.9
C 3 159 136723 307.56 2071 2031 437.9
C 9 68 134857 303.29 2071 2031 437.9
D 13 7 1990288 4407.78 2036 1973 451.1
D 1 4 483576 1067.64 2036 1973 451.1
D 1 5 456808 1008.3 2036 1973 451.1

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