ASTROSAT CZTI

Data Quality Report

Orbit 42808

Creation date: 2024-06-27T22:44:30.712131
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/AS1C07_001T12_9000005826_42808cztM0_level2.fits modeM0/AS1C07_001T12_9000005826_42808cztM0_level2_quad_clean.evt
Size (bytes)214,467,84062,830,080
Size204.5 MB 59.9 MB
Events in quadrant A1,934,956417,613
Events in quadrant B1,925,643432,054
Events in quadrant C2,056,583416,109
Events in quadrant D1,737,216379,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079271
B082141
C084301
D079941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363560.165062%
B3634290.798019%
C3634401.100715%
D3634681.871216%

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 5758 3636 3 3 0.05% 0.08%
B 5757 3635 17 17 0.30% 0.47%
C 5757 3635 36 36 0.63% 0.99%
D 5757 3635 69 69 1.20% 1.90%

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 342784 4195.91 391 383 81.6
A 12 189 48732 592.48 391 383 81.6
A 2 79 19622 235.76 391 383 81.6
B 4 171 214223 2801.89 393 383 76.3
B 0 229 73142 953.34 393 383 76.3
B 5 255 32235 417.35 393 383 76.3
C 4 254 388213 4300.62 384 386 90.2
C 15 214 143841 1590.77 384 386 90.2
C 14 254 14552 157.09 384 386 90.2
D 13 249 168012 1827.91 377 366 91.7
D 1 52 34366 370.72 377 366 91.7
D 7 96 32166 346.73 377 366 91.7

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