ASTROSAT CZTI

Data Quality Report

Orbit 07571

Creation date: 2024-06-27T15:21:09.899491
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/AS1A02_024T01_9000001044_07571cztM0_level2.evt modeM0/AS1A02_024T01_9000001044_07571cztM0_level2_quad_clean.evt
Size (bytes)519,255,36081,910,080
Size495.2 MB 78.1 MB
Events in quadrant A3,456,046499,204
Events in quadrant B3,669,049506,615
Events in quadrant C3,580,154502,917
Events in quadrant D4,544,010482,527

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147463
B0153912
C0150872
D0183142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7024731.039294%
B70241001.423690%
C7024771.096241%
D70241962.790433%

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 12415 7026 0 0 0.00% 0.00%
B 12415 7026 5 5 0.04% 0.07%
C 12415 7026 25 25 0.20% 0.36%
D 12415 7026 98 98 0.79% 1.39%

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 0 226 8428 41.55 896 878 181.7
A 12 194 7868 38.46 896 878 181.7
A 3 1 7511 36.5 896 878 181.7
B 0 214 77995 454.14 898 878 169.8
B 11 51 40615 234.01 898 878 169.8
B 0 168 28208 160.95 898 878 169.8
C 8 229 107950 525.77 876 884 203.6
C 9 68 51079 246.49 876 884 203.6
C 13 61 6730 28.71 876 884 203.6
D 2 152 865397 4021.43 872 846 215.0
D 5 233 167741 776.31 872 846 215.0
D 12 233 75151 345.63 872 846 215.0

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