ASTROSAT CZTI

Data Quality Report

Orbit 27739

Creation date: 2024-06-27T19:43:43.906017
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/AS1A09_038T42_9000003992_27739cztM0_level2.evt modeM0/AS1A09_038T42_9000003992_27739cztM0_level2_quad_clean.evt
Size (bytes)384,079,68099,610,560
Size366.3 MB 95.0 MB
Events in quadrant A2,476,608670,737
Events in quadrant B2,561,585684,621
Events in quadrant C3,283,390644,550
Events in quadrant D2,944,606640,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110660
B0111980
C0131320
D0124720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53731232.289224%
B53741572.921474%
C53742755.117231%
D53741602.977298%

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 5633 5373 0 0 0.00% 0.00%
B 5634 5374 0 0 0.00% 0.00%
C 5634 5374 71 71 1.26% 1.32%
D 5634 5374 48 48 0.85% 0.89%

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 13 254 8547 61.48 638 623 128.9
A 8 192 6692 47.09 638 623 128.9
A 3 137 6155 42.92 638 623 128.9
B 4 200 24850 200.81 635 617 120.7
B 3 64 15699 124.98 635 617 120.7
B 12 111 15168 120.58 635 617 120.7
C 3 233 564024 3966.35 609 611 142.0
C 15 208 232692 1633.82 609 611 142.0
C 14 238 98205 687.05 609 611 142.0
D 1 52 230097 1551.85 620 601 147.9
D 11 176 191003 1287.5 620 601 147.9
D 2 250 110491 743.08 620 601 147.9

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