ASTROSAT CZTI

Data Quality Report

Orbit 37993

Creation date: 2024-06-27T21:47:04.703492
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_082T01_9000005356_37993cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37993cztM0_level2_quad_clean.evt
Size (bytes)352,183,68070,361,280
Size335.9 MB 67.1 MB
Events in quadrant A3,497,365444,235
Events in quadrant B2,906,829448,833
Events in quadrant C2,813,378445,643
Events in quadrant D3,385,107401,332

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139633
B0123482
C0117032
D0138322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5577240.430339%
B5577861.542048%
C5577420.753093%
D55771021.828940%

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 7160 5578 8 8 0.11% 0.14%
B 7160 5578 49 49 0.68% 0.88%
C 7160 5578 30 30 0.42% 0.54%
D 7160 5578 81 81 1.13% 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 12 16 535062 4111.6 630 617 130.0
A 10 83 379058 2911.43 630 617 130.0
A 12 194 78795 601.44 630 617 130.0
B 4 171 132299 1085.14 629 612 121.4
B 5 184 121158 993.34 629 612 121.4
B 5 172 95242 779.78 629 612 121.4
C 15 214 234493 1614.41 617 620 144.9
C 1 23 117474 806.64 617 620 144.9
C 0 10 25696 173.1 617 620 144.9
D 1 52 286248 1909.63 609 591 149.6
D 7 223 241576 1610.99 609 591 149.6
D 1 47 131682 876.35 609 591 149.6

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