ASTROSAT CZTI

Data Quality Report

Orbit 33824

Creation date: 2024-06-27T20:53:05.772382
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/AS1A11_106T03_9000004826_33824cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33824cztM0_level2_quad_clean.evt
Size (bytes)503,694,72073,529,280
Size480.4 MB 70.1 MB
Events in quadrant A3,136,500473,061
Events in quadrant B3,048,128474,124
Events in quadrant C3,486,045467,626
Events in quadrant D5,214,177429,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125853
B0124452
C0139462
D0192872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54541162.126879%
B54541222.236890%
C5454571.045105%
D54542785.097176%

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 7158 5455 97 97 1.36% 1.78%
B 7158 5455 72 72 1.01% 1.32%
C 7158 5455 51 51 0.71% 0.93%
D 7158 5455 263 263 3.67% 4.82%

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 15 169 620817 4784.27 643 631 129.6
A 13 6 14696 108.5 643 631 129.6
A 10 83 10473 75.92 643 631 129.6
B 5 172 375391 3032.48 637 620 123.6
B 0 213 54652 437.2 637 620 123.6
B 5 255 29336 232.36 637 620 123.6
C 3 233 504428 3520.75 623 627 143.1
C 15 214 240568 1676.8 623 627 143.1
C 0 10 113558 789.2 623 627 143.1
D 8 195 1310180 8602.69 618 600 152.2
D 1 47 404359 2652.31 618 600 152.2
D 12 235 283578 1858.89 618 600 152.2

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