ASTROSAT CZTI

Data Quality Report

Orbit 20190613_T03_117T01_9000002988_level2

Creation date: 2019-06-15T13:22:34.429178
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_117T01_9000002988cztM0_level2_bc.evt modeM0/AS1T03_117T01_9000002988cztM0_level2_quad_clean.evt
Size (bytes)2,677,127,0401,059,215,040
Size2.5 GB 1010.1 MB
Events in quadrant A18,563,7316,840,887
Events in quadrant B18,007,6726,873,583
Events in quadrant C16,602,5746,540,862
Events in quadrant D22,604,2106,498,054

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01702260
B01669930
C01643760
D01807270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015820
B015820
C015820
D015820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7774314151.820100%
B7774312881.656741%
C7774313631.753213%
D7774314111.814954%

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 90113 77742 9 9 0.01% 0.01%
B 90113 77743 39 39 0.04% 0.05%
C 90113 77744 7 7 0.01% 0.01%
D 90113 77744 183 183 0.20% 0.24%

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 14 238 952743 993.63 4406 4339 954.5
A 14 254 560826 583.03 4406 4339 954.5
A 11 29 74729 73.75 4406 4339 954.5
B 10 245 500877 606.02 4413 4317 819.4
B 4 80 273589 328.63 4413 4317 819.4
B 0 198 119405 140.46 4413 4317 819.4
C 4 254 296077 298.91 4206 4195 976.5
C 3 233 67745 65.08 4206 4195 976.5
C 4 175 31814 28.28 4206 4195 976.5
D 1 52 3892927 3936.15 4328 4190 988.0
D 2 184 1170221 1180.25 4328 4190 988.0
D 2 234 313506 313.09 4328 4190 988.0

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