ASTROSAT CZTI

Data Quality Report

Orbit 20160912_G05_104T01_9000000656_level2

Creation date: 2016-10-20T23:16:48.707440
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/AS1G05_104T01_9000000656cztM0_level2_bc.evt modeM0/AS1G05_104T01_9000000656cztM0_level2_quad_clean.evt
Size (bytes)2,186,864,640862,145,280
Size2.0 GB 822.2 MB
Events in quadrant A13,408,0405,452,873
Events in quadrant B13,813,5405,498,253
Events in quadrant C12,885,0645,526,577
Events in quadrant D21,699,9425,188,710

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013280
B013200
C013300
D013260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01349170
B01351640
C01322450
D01638050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648828121.251503%
B648466651.025507%
C648713940.607359%
D6471428244.363816%

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 77873 65261 19 19 0.02% 0.03%
B 77875 65226 2 2 0.00% 0.00%
C 77874 65262 3 3 0.00% 0.00%
D 77875 65008 455 455 0.58% 0.70%

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 0 50 546773 773.45 3176 3118 702.9
A 4 2 490688 693.66 3176 3118 702.9
A 0 247 76446 104.32 3176 3118 702.9
B 15 204 652676 1061.95 3213 3133 611.6
B 0 187 192249 309.19 3213 3133 611.6
B 4 48 152732 244.58 3213 3133 611.6
C 1 16 316439 446.61 3159 3123 701.5
C 12 4 82417 113.03 3159 3123 701.5
C 14 67 48811 65.12 3159 3123 701.5
D 2 136 2050502 2793.68 3105 2993 732.9
D 2 33 1916481 2610.81 3105 2993 732.9
D 14 34 1614710 2199.07 3105 2993 732.9

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