ASTROSAT CZTI

Data Quality Report

Orbit 37925

Creation date: 2024-06-27T21:46:11.978473
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_059T01_9000005354_37925cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37925cztM0_level2_quad_clean.evt
Size (bytes)421,689,60060,912,000
Size402.2 MB 58.1 MB
Events in quadrant A2,885,444384,060
Events in quadrant B3,497,049376,853
Events in quadrant C2,927,508379,478
Events in quadrant D3,113,794345,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115293
B0135892
C0116712
D0125202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5119100.195351%
B51191603.125610%
C5119691.347920%
D5119691.347920%

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 9064 5121 5 5 0.06% 0.10%
B 9064 5121 104 104 1.15% 2.03%
C 9064 5121 51 51 0.56% 1.00%
D 9064 5121 66 66 0.73% 1.29%

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 361007 2789.04 642 631 129.2
A 12 189 15079 111.82 642 631 129.2
A 13 6 13387 98.72 642 631 129.2
B 5 172 347251 2915.31 630 616 118.9
B 12 18 295686 2481.63 630 616 118.9
B 0 229 180575 1513.51 630 616 118.9
C 15 214 218153 1507.98 624 630 144.2
C 0 10 167890 1159.53 624 630 144.2
C 15 159 39366 268.54 624 630 144.2
D 12 217 243867 1605.99 626 611 151.5
D 1 20 86065 564.17 626 611 151.5
D 2 250 74868 490.25 626 611 151.5

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