ASTROSAT CZTI

Data Quality Report

Orbit 20170514_A03_135T01_9000001226_level2

Creation date: 2017-09-23T22:46:03.465328
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_135T01_9000001226cztM0_level2.evt modeM0/AS1A03_135T01_9000001226cztM0_level2_quad_clean.evt
Size (bytes)526,357,440107,138,880
Size502.0 MB 102.2 MB
Events in quadrant A4,465,368721,593
Events in quadrant B3,208,143727,550
Events in quadrant C2,942,259709,781
Events in quadrant D4,906,231654,606

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174630
B0134460
C0128410
D0185840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61832664.302119%
B61821071.730831%
C6183751.213003%
D61845739.265847%

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 7454 6184 131 131 1.76% 2.12%
B 7454 6184 14 14 0.19% 0.23%
C 7454 6184 0 0 0.00% 0.00%
D 7454 6184 464 464 6.22% 7.50%

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 8 5 1044793 6580.49 788 774 158.7
A 15 223 239401 1504.08 788 774 158.7
A 15 239 96882 605.77 788 774 158.7
B 10 16 141554 945.26 781 764 148.9
B 0 214 23131 150.17 781 764 148.9
B 12 111 14901 94.92 781 764 148.9
C 13 61 5794 29.23 753 758 172.3
C 12 4 3215 14.26 753 758 172.3
C 3 202 1966 7.01 753 758 172.3
D 2 16 1477453 7838.55 730 717 188.4
D 2 152 393952 2087.3 730 717 188.4
D 1 52 82866 436.05 730 717 188.4

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