ASTROSAT CZTI

Data Quality Report

Orbit 47835

Creation date: 2024-08-02T10:10:19.282111
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/AS1T05_216T01_9000006356_47835cztM0_level2.fits modeM0/AS1T05_216T01_9000006356_47835cztM0_level2_quad_clean.evt
Size (bytes)485,320,320106,352,640
Size462.8 MB 101.4 MB
Events in quadrant A7,055,911689,872
Events in quadrant B3,431,632723,363
Events in quadrant C3,062,239708,495
Events in quadrant D3,906,880641,786

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253782
B0149642
C0137682
D0162322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65533204.883260%
B65531141.739661%
C6553350.534107%
D65531161.770182%

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 7643 6553 210 210 2.75% 3.20%
B 7643 6553 43 43 0.56% 0.66%
C 7643 6554 13 13 0.17% 0.20%
D 7643 6554 95 95 1.24% 1.45%

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 3876441 26148.3 712 697 148.2
A 0 31 400004 2693.98 712 697 148.2
A 13 248 17204 111.36 712 697 148.2
B 0 186 314523 2207.95 718 695 142.1
B 0 200 114641 801.67 718 695 142.1
B 8 234 42166 291.77 718 695 142.1
C 12 2 257428 1536.18 713 718 167.1
C 14 254 12155 68.44 713 718 167.1
C 2 80 5728 29.98 713 718 167.1
D 12 33 344087 1918.12 705 684 179.0
D 12 128 171599 954.66 705 684 179.0
D 12 2 152847 849.92 705 684 179.0

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