ASTROSAT CZTI

Data Quality Report

Orbit 20190901_A05_062T02_9000003138_level2

Creation date: 2019-09-03T17:31:36.863908
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_062T02_9000003138cztM0_level2_bc.evt modeM0/AS1A05_062T02_9000003138cztM0_level2_quad_clean.evt
Size (bytes)1,738,653,120467,144,640
Size1.6 GB 445.5 MB
Events in quadrant A10,322,7243,073,051
Events in quadrant B8,577,4973,140,398
Events in quadrant C6,860,5803,024,717
Events in quadrant D24,654,3382,651,075

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0710
B0710
C0710
D0710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820080
B0745920
C0694840
D01405480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06740
B06740
C06740
D06740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3286315744.789581%
B328639612.924261%
C328636762.057025%
D32862558016.980099%

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 40108 32856 133 133 0.33% 0.40%
B 40108 32857 94 94 0.23% 0.29%
C 40108 32856 0 0 0.00% 0.00%
D 40108 32855 971 971 2.42% 2.96%

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 2567977 6525.82 1820 1794 393.2
A 11 47 267132 674.76 1820 1794 393.2
A 5 16 179170 451.07 1820 1794 393.2
B 0 189 797612 2272.54 1851 1810 350.2
B 0 197 164909 465.76 1851 1810 350.2
B 0 190 152936 431.56 1851 1810 350.2
C 6 14 34957 80.83 1764 1762 410.7
C 0 10 17983 39.5 1764 1762 410.7
C 8 128 11381 23.42 1764 1762 410.7
D 13 174 6913035 17813.33 1682 1629 388.0
D 1 239 3863278 9952.94 1682 1629 388.0
D 1 52 3508384 9038.24 1682 1629 388.0

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