ASTROSAT CZTI

Data Quality Report

Orbit 52859

Creation date: 2025-07-16T11:00:23.068670
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/AS1C09_011T08_9000006482_52859cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52859cztM0_level2_quad_clean.evt
Size (bytes)755,694,72081,466,560
Size720.7 MB 77.7 MB
Events in quadrant A8,532,427481,403
Events in quadrant B8,122,091544,281
Events in quadrant C4,895,962525,289
Events in quadrant D5,960,715497,302

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295478
B0283661
C0187761
D0218291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5989165927.700785%
B5990132822.170284%
C599067411.252087%
D599075512.604341%

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 7110 5990 1403 1403 19.73% 23.42%
B 7111 5991 1093 1093 15.37% 18.24%
C 7111 5991 519 519 7.30% 8.66%
D 7111 5991 563 563 7.92% 9.40%

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 9 191 4359897 29314.87 591 577 148.7
A 3 62 1042392 7005.83 591 577 148.7
A 3 14 375734 2522.79 591 577 148.7
B 8 3 5186458 39965.47 608 588 129.8
B 0 213 91108 697.6 608 588 129.8
B 0 171 73703 563.47 608 588 129.8
C 15 224 990858 6005.33 594 586 164.9
C 13 3 922907 5593.26 594 586 164.9
C 12 249 273659 1656.0 594 586 164.9
D 8 176 1180722 6777.18 599 571 174.1
D 2 37 771501 4427.17 599 571 174.1
D 7 96 508572 2917.27 599 571 174.1

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