ASTROSAT CZTI

Data Quality Report

Orbit 52514

Creation date: 2025-06-14T11:42:50.579095
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_011T06_9000006478_52514cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52514cztM0_level2_quad_clean.evt
Size (bytes)818,372,16082,396,800
Size780.5 MB 78.6 MB
Events in quadrant A3,023,114691,533
Events in quadrant B6,183,599604,258
Events in quadrant C12,259,269267,579
Events in quadrant D8,304,682460,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143701
B0231641
C0410881
D0293731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67491081.600237%
B675094614.014815%
C6750403459.762963%
D6750132819.674074%

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 7544 6749 9 9 0.12% 0.13%
B 7545 6750 753 753 9.98% 11.16%
C 7544 6749 3412 3412 45.23% 50.56%
D 7545 6750 1414 1414 18.74% 20.95%

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 3 62 57828 312.67 722 706 182.7
A 8 249 57287 309.71 722 706 182.7
A 11 3 27478 146.54 722 706 182.7
B 10 44 2218468 15760.42 654 631 140.7
B 4 171 472251 3351.43 654 631 140.7
B 4 81 250369 1774.69 654 631 140.7
C 15 224 8535173 71356.2 424 419 119.6
C 15 233 1232448 10300.58 424 419 119.6
C 2 207 293295 2448.64 424 419 119.6
D 6 42 3422217 19202.03 615 585 178.2
D 15 93 1197777 6718.58 615 585 178.2
D 8 176 476286 2669.61 615 585 178.2

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