ASTROSAT CZTI

Data Quality Report

Orbit 37317

Creation date: 2024-06-27T21:38:22.189205
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_030T02_9000005310_37317cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37317cztM0_level2_quad_clean.evt
Size (bytes)430,413,12079,488,000
Size410.5 MB 75.8 MB
Events in quadrant A3,108,251503,625
Events in quadrant B3,034,801524,277
Events in quadrant C3,328,171505,488
Events in quadrant D3,180,763479,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125603
B0124542
C0130722
D0130832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5634240.425985%
B56341091.934682%
C56341091.934682%
D5634951.686191%

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 9579 5636 13 13 0.14% 0.23%
B 9579 5636 54 54 0.56% 0.96%
C 9579 5636 90 90 0.94% 1.60%
D 9579 5636 63 63 0.66% 1.12%

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 279452 2042.7 689 678 136.5
A 13 248 63941 463.56 689 678 136.5
A 9 143 45242 326.54 689 678 136.5
B 5 172 245430 1895.69 684 668 129.1
B 5 200 20519 153.75 684 668 129.1
B 0 190 20310 152.13 684 668 129.1
C 1 23 291421 1856.24 672 678 156.6
C 15 214 236804 1507.54 672 678 156.6
C 0 10 116487 739.38 672 678 156.6
D 13 249 197609 1204.4 675 660 163.5
D 2 249 122928 747.7 675 660 163.5
D 12 128 44347 267.16 675 660 163.5

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