ASTROSAT CZTI

Data Quality Report

Orbit 20191128_A07_049T01_9000003344_level2

Creation date: 2019-11-30T12:46:14.455917
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/AS1A07_049T01_9000003344cztM0_level2_bc.evt modeM0/AS1A07_049T01_9000003344cztM0_level2_quad_clean.evt
Size (bytes)2,269,180,800825,528,960
Size2.1 GB 787.3 MB
Events in quadrant A13,017,1825,314,742
Events in quadrant B14,078,4615,377,568
Events in quadrant C12,757,0545,122,250
Events in quadrant D24,558,2774,855,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01303860
B01351030
C01308820
D01850770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01050
B01050
C01050
D01050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012860
B012860
C012860
D012860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A632045210.824315%
B632049021.427125%
C632048311.314790%
D6320460439.561104%

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 73744 63196 0 0 0.00% 0.00%
B 73744 63195 12 12 0.02% 0.02%
C 73744 63196 1 1 0.00% 0.00%
D 73744 63192 916 916 1.24% 1.45%

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 13 254 95458 126.56 3361 3299 728.2
A 3 1 40191 50.66 3361 3299 728.2
A 0 226 21925 25.58 3361 3299 728.2
B 15 33 613378 961.79 3391 3309 634.3
B 5 172 147632 227.53 3391 3309 634.3
B 0 229 87490 132.71 3391 3309 634.3
C 0 207 126343 161.94 3241 3228 760.3
C 10 22 79669 100.54 3241 3228 760.3
C 0 10 45705 55.87 3241 3228 760.3
D 1 52 6069782 8411.37 3108 2999 721.3
D 7 223 5091188 7054.58 3108 2999 721.3
D 12 227 613412 846.31 3108 2999 721.3

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