ASTROSAT CZTI

Data Quality Report

Orbit 20181230_T03_012T01_9000002606_level2

Creation date: 2018-12-31T14:16:08.742823
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_012T01_9000002606cztM0_level2_bc.evt modeM0/AS1T03_012T01_9000002606cztM0_level2_quad_clean.evt
Size (bytes)624,660,480239,230,080
Size595.7 MB 228.1 MB
Events in quadrant A3,659,7441,515,007
Events in quadrant B3,761,4271,525,211
Events in quadrant C6,084,0121,455,570
Events in quadrant D4,130,4811,460,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382610
B0386490
C0495930
D0401120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18716860.459500%
B187161260.673221%
C187163351.789912%
D187161660.886942%

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 21631 18718 1 1 0.00% 0.01%
B 21631 18716 0 0 0.00% 0.00%
C 21631 18715 0 0 0.00% 0.00%
D 21631 18716 7 7 0.03% 0.04%

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 0 13 26363 120.79 942 922 210.6
A 14 237 8180 34.46 942 922 210.6
A 15 191 7939 33.31 942 922 210.6
B 0 189 35090 185.95 946 921 183.8
B 0 230 27734 145.92 946 921 183.8
B 0 183 17471 90.07 946 921 183.8
C 3 233 2486057 11625.99 898 890 213.8
C 5 218 126837 589.2 898 890 213.8
C 9 54 9941 42.34 898 890 213.8
D 13 189 299242 1381.25 927 895 216.0
D 7 55 109776 504.08 927 895 216.0
D 2 234 65390 298.59 927 895 216.0

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