ASTROSAT CZTI

Data Quality Report

Orbit 20180824_A04_198T01_9000002322_level2

Creation date: 2018-08-31T16:20:40.242545
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/AS1A04_198T01_9000002322cztM0_level2_bc.evt modeM0/AS1A04_198T01_9000002322cztM0_level2_quad_clean.evt
Size (bytes)3,571,750,0801,417,985,280
Size3.3 GB 1.3 GB
Events in quadrant A23,581,0948,969,722
Events in quadrant B23,057,7749,190,677
Events in quadrant C24,811,2068,934,229
Events in quadrant D29,652,7468,747,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02245500
B02193910
C02288440
D02419110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021160
B021160
C021160
D021160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10372325612.469076%
B10372316481.588847%
C10372319731.902182%
D10372327592.659969%

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 121969 103730 81 81 0.07% 0.08%
B 121969 103726 24 24 0.02% 0.02%
C 121969 103726 7 7 0.01% 0.01%
D 121969 103726 341 341 0.28% 0.33%

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 13 248 2415149 2117.48 5291 5191 1138.1
A 9 143 433757 376.55 5291 5191 1138.1
A 13 210 204764 175.35 5291 5191 1138.1
B 5 236 447556 439.38 5403 5270 1006.6
B 4 173 435452 427.35 5403 5270 1006.6
B 4 216 337583 330.13 5403 5270 1006.6
C 3 233 3709863 2977.3 5275 5244 1244.3
C 15 127 340668 269.57 5275 5244 1244.3
C 9 54 264891 208.67 5275 5244 1244.3
D 1 52 4974550 3729.7 5290 5150 1332.4
D 12 144 1932340 1446.42 5290 5150 1332.4
D 12 110 707222 526.93 5290 5150 1332.4

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