ASTROSAT CZTI

Data Quality Report

Orbit 20160104_G02_034T02_9000000244_level2

Creation date: 2017-10-31T20:12:38.620115
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/AS1G02_034T02_9000000244cztM0_level2.evt modeM0/AS1G02_034T02_9000000244cztM0_level2_quad_clean.evt
Size (bytes)1,871,648,640139,014,720
Size1.7 GB 132.6 MB
Events in quadrant A13,902,356841,606
Events in quadrant B14,882,279867,911
Events in quadrant C14,150,797863,652
Events in quadrant D12,976,376829,753

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496210
B0524950
C0503230
D0469890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11673620.531140%
B11673650.556841%
C11673310.265570%
D116733783.238242%

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 14093 11675 436 436 3.09% 3.73%
B 14093 11675 573 573 4.07% 4.91%
C 14093 11675 384 384 2.72% 3.29%
D 14093 11675 590 590 4.19% 5.05%

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 4 32 364134 425.94 3523 3553 846.6
A 13 235 17692 16.7 3523 3553 846.6
A 11 79 13315 11.53 3523 3553 846.6
B 8 4 378662 435.05 3672 3702 861.9
B 5 249 159521 180.79 3672 3702 861.9
B 15 22 157677 178.65 3672 3702 861.9
C 15 241 945854 1021.54 3315 3425 922.6
C 12 4 106229 111.43 3315 3425 922.6
C 9 203 47496 47.77 3315 3425 922.6
D 5 190 1107760 1138.44 3139 3256 970.2
D 9 53 71281 70.12 3139 3256 970.2
D 5 82 32694 30.34 3139 3256 970.2

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