ASTROSAT CZTI

Data Quality Report

Orbit 20180525_A04_149T01_9000002118_level2

Creation date: 2018-05-28T16:40:32.305535
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_149T01_9000002118cztM0_level2_bc.evt modeM0/AS1A04_149T01_9000002118cztM0_level2_quad_clean.evt
Size (bytes)2,850,624,0001,042,312,320
Size2.7 GB 994.0 MB
Events in quadrant A15,727,2646,726,666
Events in quadrant B18,422,0776,741,746
Events in quadrant C21,138,2646,649,290
Events in quadrant D25,974,3416,350,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015160
B015160
C015160
D015160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01535880
B01642090
C01692010
D01850040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A744388861.190252%
B7443816432.207206%
C744387200.967248%
D7443829713.991241%

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 86480 74438 3 3 0.00% 0.00%
B 86480 74436 32 32 0.04% 0.04%
C 86480 74437 4 4 0.00% 0.01%
D 86479 74435 1403 1403 1.62% 1.88%

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 12 189 304978 354.28 3897 3826 850.0
A 8 15 256860 297.67 3897 3826 850.0
A 9 143 69591 77.37 3897 3826 850.0
B 0 229 957343 1286.14 3920 3818 741.4
B 0 182 735394 986.77 3920 3818 741.4
B 10 245 368185 491.47 3920 3818 741.4
C 3 233 6039325 7204.57 3818 3784 837.7
C 3 232 50369 55.61 3818 3784 837.7
C 14 234 32375 34.13 3818 3784 837.7
D 12 110 5257278 5970.75 3783 3682 879.9
D 1 52 3259719 3700.51 3783 3682 879.9
D 2 120 957623 1084.16 3783 3682 879.9

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