ASTROSAT CZTI

Data Quality Report

Orbit 35694

Creation date: 2022-05-10T14:38:53.105903
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/AS1A09_142T02_9000005112_35694cztM0_level2.evt modeM0/AS1A09_142T02_9000005112_35694cztM0_level2_quad_clean.evt
Size (bytes)401,762,88094,988,160
Size383.2 MB 90.6 MB
Events in quadrant A2,728,847639,733
Events in quadrant B3,021,190636,542
Events in quadrant C2,845,787627,303
Events in quadrant D3,206,934597,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114783
B0122182
C0115652
D0129842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5368110.204918%
B5368871.620715%
C5368400.745156%
D53681482.757079%

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 7221 5369 1 1 0.01% 0.02%
B 7221 5369 60 60 0.83% 1.12%
C 7221 5369 33 33 0.46% 0.61%
D 7221 5369 137 137 1.90% 2.55%

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 148319 1121.58 658 646 131.7
A 13 6 24504 181.2 658 646 131.7
A 7 3 10829 77.34 658 646 131.7
B 5 172 200567 1636.67 641 625 122.2
B 5 255 179551 1464.64 641 625 122.2
B 3 112 40968 330.24 641 625 122.2
C 15 214 224906 1530.43 635 641 146.5
C 0 10 134215 911.53 635 641 146.5
C 4 254 6751 41.7 635 641 146.5
D 12 6 406818 2635.62 635 618 154.1
D 13 249 160252 1035.78 635 618 154.1
D 2 153 42035 268.73 635 618 154.1

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