ASTROSAT CZTI

Data Quality Report

Orbit 20240802_A13_073T04_9000006358_level2

Creation date: 2024-08-06T08:33:17.108788
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_073T04_9000006358cztM0_level2.fits modeM0/AS1A13_073T04_9000006358cztM0_level2_quad_clean.evt
Size (bytes)229,826,880214,845,120
Size219.2 MB 204.9 MB
Events in quadrant A1,355,6541,213,191
Events in quadrant B1,345,9281,275,255
Events in quadrant C1,368,2741,204,003
Events in quadrant D1,115,0641,039,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0924860
B0533430
C0532780
D0809030

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05260
B05260
C05260
D05260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A257917342.845954%
B257912570.996472%
C257911180.457524%
D25790278710.806514%

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 31440 25786 0 0 0.00% 0.00%
B 31440 25786 0 0 0.00% 0.00%
C 31440 25788 0 0 0.00% 0.00%
D 31439 25775 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 1087 8.12 353 331 93.1
A 0 29 1056 7.79 353 331 93.1
A 7 109 1043 7.65 353 331 93.1
B 2 9 1221 12.01 356 340 73.4
B 2 8 989 8.85 356 340 73.4
B 3 17 950 8.32 356 340 73.4
C 3 202 1085 7.85 361 336 95.4
C 3 203 1076 7.76 361 336 95.4
C 1 81 1041 7.39 361 336 95.4
D 7 3 856 6.31 319 290 89.7
D 10 189 821 5.92 319 290 89.7
D 6 38 819 5.9 319 290 89.7

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