ASTROSAT CZTI

Data Quality Report

Orbit 20190918_T03_138T02_9000003172_level2

Creation date: 2019-09-18T12:52:58.250182
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/AS1T03_138T02_9000003172cztM0_level2_bc.evt modeM0/AS1T03_138T02_9000003172cztM0_level2_quad_clean.evt
Size (bytes)213,180,48081,466,560
Size203.3 MB 77.7 MB
Events in quadrant A1,238,753525,775
Events in quadrant B1,414,422537,147
Events in quadrant C1,232,505502,461
Events in quadrant D2,155,260483,854

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122100
B0130540
C0124840
D0153020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A598050.083612%
B5980170.284281%
C5980410.685619%
D59801342.240803%

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 7000 5979 0 0 0.00% 0.00%
B 7000 5980 2 2 0.03% 0.03%
C 7000 5980 0 0 0.00% 0.00%
D 7000 5980 16 16 0.23% 0.27%

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 8564 114.07 319 311 72.4
A 15 174 8022 106.58 319 311 72.4
A 0 226 2106 24.81 319 311 72.4
B 3 64 37151 579.21 322 314 63.6
B 0 219 36750 572.91 322 314 63.6
B 0 230 18989 293.64 322 314 63.6
C 0 207 55634 750.54 305 301 73.7
C 3 233 1921 21.97 305 301 73.7
C 10 23 1773 19.96 305 301 73.7
D 1 20 501464 6689.85 308 296 74.9
D 12 233 90930 1209.83 308 296 74.9
D 13 174 90555 1204.82 308 296 74.9

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