ASTROSAT CZTI

Data Quality Report

Orbit 44051

Creation date: 2024-06-27T22:58:45.581376
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_025T02_9000005938_44051cztM0_level2.fits modeM0/AS1A13_025T02_9000005938_44051cztM0_level2_quad_clean.evt
Size (bytes)441,083,520110,200,320
Size420.7 MB 105.1 MB
Events in quadrant A4,635,560738,422
Events in quadrant B3,286,023779,757
Events in quadrant C4,082,008703,672
Events in quadrant D3,809,433653,691

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182472
B0143582
C0167442
D0160792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66171922.901617%
B6617510.770742%
C66173284.956929%
D66172043.082968%

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 7732 6618 91 91 1.18% 1.38%
B 7732 6618 9 9 0.12% 0.14%
C 7732 6618 261 261 3.38% 3.94%
D 7732 6618 108 108 1.40% 1.63%

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 10 83 1241436 7930.57 754 738 156.4
A 15 222 339107 2162.86 754 738 156.4
A 15 223 99171 629.19 754 738 156.4
B 0 200 189489 1267.2 758 735 149.0
B 0 213 65345 433.76 758 735 149.0
B 4 171 21051 136.39 758 735 149.0
C 1 241 737447 4366.25 717 721 168.7
C 14 254 483947 2863.87 717 721 168.7
C 3 233 41097 239.29 717 721 168.7
D 1 52 665964 3681.56 717 695 180.7
D 5 222 95626 525.34 717 695 180.7
D 2 249 79106 433.92 717 695 180.7

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