ASTROSAT CZTI

Data Quality Report

Orbit 20180109_A04_210T03_9000001830_level2

Creation date: 2018-07-30T15:18:12.189754
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_210T03_9000001830cztM0_level2_bc.evt modeM0/AS1A04_210T03_9000001830cztM0_level2_quad_clean.evt
Size (bytes)805,993,920223,922,880
Size768.7 MB 213.5 MB
Events in quadrant A7,000,1561,357,227
Events in quadrant B4,853,6791,405,911
Events in quadrant C4,095,2061,387,112
Events in quadrant D7,131,8731,292,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0543270
B0435590
C0408320
D0507020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03940
B03940
C03940
D03940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194394592.361233%
B194392711.394105%
C194391180.607027%
D194397733.976542%

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 23245 19440 0 0 0.00% 0.00%
B 23245 19440 1 1 0.00% 0.01%
C 23245 19440 8 8 0.03% 0.04%
D 23245 19440 347 347 1.49% 1.78%

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 8 15 1758051 8409.4 945 923 208.9
A 13 251 1119278 5352.31 945 923 208.9
A 1 162 371014 1771.21 945 923 208.9
B 4 239 479372 2556.5 968 939 187.1
B 0 85 313193 1668.53 968 939 187.1
B 0 230 74327 392.15 968 939 187.1
C 15 208 374381 1765.73 947 933 211.5
C 14 234 7482 30.96 947 933 211.5
C 8 222 6255 25.16 947 933 211.5
D 1 52 2614571 11952.44 936 902 218.7
D 5 222 339280 1547.42 936 902 218.7
D 13 104 190182 865.59 936 902 218.7

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