ASTROSAT CZTI

Data Quality Report

Orbit 50579

Creation date: 2025-02-03T04:42:19.484185
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_239T01_9000006444_50579cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50579cztM0_level2_quad_clean.evt
Size (bytes)698,555,52088,315,200
Size666.2 MB 84.2 MB
Events in quadrant A5,405,195588,492
Events in quadrant B9,702,355476,082
Events in quadrant C5,003,715588,616
Events in quadrant D5,236,894561,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205592
B0334332
C0194642
D0203022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A658770110.642174%
B6587244937.179293%
C65874647.044178%
D65863945.982387%

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 7767 6587 584 584 7.52% 8.87%
B 7767 6588 1745 1745 22.47% 26.49%
C 7767 6588 367 367 4.73% 5.57%
D 7766 6587 351 351 4.52% 5.33%

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 4 249 1811383 10841.65 673 657 167.0
A 4 3 239142 1427.92 673 657 167.0
A 8 38 214642 1281.23 673 657 167.0
B 5 172 3185391 24969.84 603 585 127.5
B 4 170 2526925 19807.26 603 585 127.5
B 7 0 617617 4837.72 603 585 127.5
C 15 195 844295 4581.54 677 674 184.1
C 15 196 692791 3758.76 677 674 184.1
C 15 147 191284 1035.17 677 674 184.1
D 8 246 636994 3396.97 671 646 187.3
D 6 42 544054 2900.83 671 646 187.3
D 8 48 344435 1835.22 671 646 187.3

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