ASTROSAT CZTI

Data Quality Report

Orbit 20151022_P01_162T05_9000000052_level2

Creation date: 2025-01-05T01:32:16.384422
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1P01_162T05_9000000052cztM0_level2.fits modeM0/AS1P01_162T05_9000000052cztM0_level2_quad_clean.evt
Size (bytes)205,937,280228,957,120
Size196.4 MB 218.4 MB
Events in quadrant A1,185,4581,497,493
Events in quadrant B955,326816,238
Events in quadrant C1,199,1561,426,015
Events in quadrant D1,006,1561,309,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05600
B05600
C05600
D05600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01161370
B02180540
C01079600
D01129040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27405580.211640%
B274051322148.243021%
C27405350.127714%
D274056212.266010%

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 43122 27405 0 0 0.00% 0.00%
B 43122 27399 0 0 0.00% 0.00%
C 43122 27404 0 0 0.00% 0.00%
D 43122 27405 0 0 0.00% 0.00%

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 7 110 1145 11.5 307 287 74.6
A 0 29 1131 11.31 307 287 74.6
A 0 30 837 7.37 307 287 74.6
B 2 9 827 12.15 253 240 48.3
B 5 128 725 10.04 253 240 48.3
B 14 254 664 8.78 253 240 48.3
C 12 241 906 7.68 316 292 80.0
C 3 187 829 6.71 316 292 80.0
C 2 191 789 6.21 316 292 80.0
D 11 82 788 7.27 288 264 72.0
D 6 231 737 6.57 288 264 72.0
D 6 44 732 6.5 288 264 72.0

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