ASTROSAT CZTI

Data Quality Report

Orbit 20191026_A07_047T09_9000003260_level2

Creation date: 2019-10-30T14:48:39.362973
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_047T09_9000003260cztM0_level2_bc.evt modeM0/AS1A07_047T09_9000003260cztM0_level2_quad_clean.evt
Size (bytes)303,330,240169,597,440
Size289.3 MB 161.7 MB
Events in quadrant A1,829,1141,178,124
Events in quadrant B2,041,7391,192,046
Events in quadrant C1,755,3461,128,781
Events in quadrant D3,014,9641,089,503

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168310
B0174710
C0168220
D0215130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78981471.861231%
B78982012.544948%
C78982092.646240%
D78984846.128134%

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 10473 7896 0 0 0.00% 0.00%
B 10473 7896 3 3 0.03% 0.04%
C 10473 7896 0 0 0.00% 0.00%
D 10473 7896 49 49 0.47% 0.62%

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 12174 114.12 474 469 102.6
A 3 1 3901 33.46 474 469 102.6
A 0 226 3068 25.34 474 469 102.6
B 3 64 118246 1305.86 475 467 90.2
B 0 190 33031 361.05 475 467 90.2
B 0 197 23579 256.25 475 467 90.2
C 10 22 18954 174.3 449 451 106.2
C 9 54 5832 50.69 449 451 106.2
C 0 10 3506 28.78 449 451 106.2
D 12 233 556320 5240.99 454 440 106.1
D 13 249 326833 3077.32 454 440 106.1
D 11 176 145855 1371.01 454 440 106.1

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