ASTROSAT CZTI

Data Quality Report

Orbit 20181012_A05_069T04_9000002428_level2

Creation date: 2018-10-13T18:24:56.809335
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/AS1A05_069T04_9000002428cztM0_level2_bc.evt modeM0/AS1A05_069T04_9000002428cztM0_level2_quad_clean.evt
Size (bytes)2,674,834,560792,466,560
Size2.5 GB 755.8 MB
Events in quadrant A20,181,8394,714,422
Events in quadrant B16,908,1305,198,634
Events in quadrant C22,464,1354,837,670
Events in quadrant D16,996,5604,768,097

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013340
B013340
C013340
D013340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01869960
B01479500
C01776000
D01459920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65327848712.991566%
B6532711301.729760%
C6532738895.953128%
D653278981.374623%

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 76613 65296 575 575 0.75% 0.88%
B 76613 65320 49 49 0.06% 0.08%
C 76613 65320 80 80 0.10% 0.12%
D 76613 65322 77 77 0.10% 0.12%

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 15 174 8281549 12485.64 3068 3010 663.0
A 3 1 57778 82.6 3068 3010 663.0
A 15 223 52639 74.85 3068 3010 663.0
B 15 35 1015951 1580.57 3422 3334 640.7
B 0 229 581649 902.68 3422 3334 640.7
B 0 198 433152 670.89 3422 3334 640.7
C 3 233 5877474 7762.93 3189 3166 756.7
C 4 254 4050707 5348.85 3189 3166 756.7
C 7 247 216349 281.72 3189 3166 756.7
D 5 222 1934925 2558.81 3290 3174 754.9
D 1 52 803997 1060.78 3290 3174 754.9
D 12 218 649362 855.94 3290 3174 754.9

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