ASTROSAT CZTI

Data Quality Report

Orbit 20161207_C02_010T01_9000000860_level2

Creation date: 2017-09-21T11:27:06.792448
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/AS1C02_010T01_9000000860cztM0_level2.evt modeM0/AS1C02_010T01_9000000860cztM0_level2_quad_clean.evt
Size (bytes)455,011,200104,244,480
Size433.9 MB 99.4 MB
Events in quadrant A3,251,893674,969
Events in quadrant B3,207,601681,510
Events in quadrant C3,016,848669,900
Events in quadrant D3,831,563647,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146490
B0143540
C0140330
D0160910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6947230.331078%
B6947360.518209%
C6947220.316683%
D69471071.540233%

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 7687 6948 0 0 0.00% 0.00%
B 7687 6948 0 0 0.00% 0.00%
C 7687 6948 1 1 0.01% 0.01%
D 7687 6948 62 62 0.81% 0.89%

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 15 236 173254 1069.85 787 769 161.2
A 8 15 32259 195.32 787 769 161.2
A 10 133 9628 54.95 787 769 161.2
B 15 204 30282 194.39 795 775 151.8
B 4 81 26614 170.23 795 775 151.8
B 0 214 18879 119.27 795 775 151.8
C 12 4 8632 44.26 768 769 177.6
C 13 61 6046 29.71 768 769 177.6
C 1 16 6035 29.64 768 769 177.6
D 2 152 603871 3255.68 765 741 185.3
D 11 241 102817 551.0 765 741 185.3
D 8 195 63888 340.86 765 741 185.3

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