ASTROSAT CZTI

Data Quality Report

Orbit 44797

Creation date: 2024-06-27T23:06:41.797689
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/AS1A13_004T13_9000006022_44797cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44797cztM0_level2_quad_clean.evt
Size (bytes)825,393,600115,312,320
Size787.2 MB 110.0 MB
Events in quadrant A12,848,758605,912
Events in quadrant B5,216,952828,149
Events in quadrant C3,721,653843,122
Events in quadrant D8,149,192659,457

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437591
B0209961
C0169801
D0297353

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7973279735.080898%
B79735476.860655%
C7973560.702371%
D7972135416.984446%

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 8508 7973 2345 2345 27.56% 29.41%
B 8508 7973 221 221 2.60% 2.77%
C 8508 7974 8 8 0.09% 0.10%
D 8508 7973 1162 1162 13.66% 14.57%

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 15 223 7800141 47960.91 780 760 162.6
A 10 83 1980416 12173.54 780 760 162.6
A 10 248 41485 250.43 780 760 162.6
B 0 189 1196624 6751.2 888 857 177.1
B 5 255 223169 1255.16 888 857 177.1
B 5 172 61529 342.55 888 857 177.1
C 14 254 134490 633.0 897 901 211.0
C 2 14 41286 191.36 897 901 211.0
C 1 3 24402 111.36 897 901 211.0
D 13 187 2657525 12956.55 819 793 205.0
D 5 235 483045 2351.88 819 793 205.0
D 5 171 477647 2325.56 819 793 205.0

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