ASTROSAT CZTI

Data Quality Report

Orbit 20171028_A04_080T02_9000001646_level2

Creation date: 2017-10-30T16:23:42.728356
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/AS1A04_080T02_9000001646cztM0_level2.evt modeM0/AS1A04_080T02_9000001646cztM0_level2_quad_clean.evt
Size (bytes)705,870,72090,751,680
Size673.2 MB 86.5 MB
Events in quadrant A5,192,907559,397
Events in quadrant B6,622,569535,591
Events in quadrant C3,783,723571,844
Events in quadrant D5,242,961531,139

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206080
B0248860
C0168660
D0209070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78974595.812334%
B7897119515.132329%
C78972503.165759%
D78975406.838040%

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 8252 7898 94 94 1.14% 1.19%
B 8252 7898 568 568 6.88% 7.19%
C 8252 7899 3 3 0.04% 0.04%
D 8252 7899 188 188 2.28% 2.38%

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 13 251 718802 3565.12 968 945 201.4
A 8 5 291100 1441.01 968 945 201.4
A 14 238 280254 1387.14 968 945 201.4
B 3 64 1415715 7531.12 945 917 187.9
B 4 239 1362201 7246.26 945 917 187.9
B 4 81 33759 174.82 945 917 187.9
C 5 128 10548 41.82 961 966 229.1
C 7 238 10320 40.83 961 966 229.1
C 13 61 7006 26.36 961 966 229.1
D 10 253 435343 1926.07 929 902 225.6
D 1 52 357599 1581.39 929 902 225.6
D 13 249 273128 1206.9 929 902 225.6

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