ASTROSAT CZTI

Data Quality Report

Orbit 46357

Creation date: 2024-06-27T23:22:10.035414
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_070T05_9000006198_46357cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46357cztM0_level2_quad_clean.evt
Size (bytes)770,952,96093,841,920
Size735.2 MB 89.5 MB
Events in quadrant A10,566,857430,355
Events in quadrant B3,857,238782,698
Events in quadrant C2,997,234749,000
Events in quadrant D10,612,905426,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357102
B0156332
C0133782
D0359908

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6496299946.166872%
B64962694.141010%
C6496771.185345%
D6494302046.504466%

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 7621 6497 2409 2409 31.61% 37.08%
B 7621 6497 105 105 1.38% 1.62%
C 7621 6497 0 0 0.00% 0.00%
D 7620 6495 2344 2344 30.76% 36.09%

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 15 223 4982233 40596.14 591 580 122.7
A 10 83 2474440 20159.81 591 580 122.7
A 15 239 380119 3092.91 591 580 122.7
B 5 172 509066 3389.86 772 750 150.0
B 0 189 74876 494.33 772 750 150.0
B 5 255 53144 349.4 772 750 150.0
C 12 249 11488 60.37 759 765 177.6
C 3 233 10291 53.63 759 765 177.6
C 2 14 7401 37.36 759 765 177.6
D 5 235 5312263 32762.74 644 624 162.1
D 1 52 1620085 9989.0 644 624 162.1
D 2 37 854626 5267.57 644 624 162.1

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