ASTROSAT CZTI

Data Quality Report

Orbit 24667

Creation date: 2024-06-27T19:08:33.357156
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/AS1T03_191T01_9000003618_24667cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24667cztM0_level2_quad_clean.evt
Size (bytes)508,590,720129,755,520
Size485.0 MB 123.7 MB
Events in quadrant A3,109,018906,398
Events in quadrant B3,184,874907,211
Events in quadrant C3,138,559854,016
Events in quadrant D5,531,502811,489

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133501
B0134821
C0135281
D0208731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6461701.083424%
B6462751.160631%
C6462751.160631%
D646282712.797895%

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 7466 6462 1 1 0.01% 0.02%
B 7467 6463 2 2 0.03% 0.03%
C 7467 6463 2 2 0.03% 0.03%
D 7467 6463 729 729 9.76% 11.28%

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 11217 64.58 804 786 161.5
A 4 2 7240 39.96 804 786 161.5
A 0 226 7087 39.01 804 786 161.5
B 7 202 33798 220.68 792 771 149.7
B 0 189 21305 137.2 792 771 149.7
B 12 111 17590 112.38 792 771 149.7
C 14 238 123758 709.56 751 755 173.4
C 2 16 30946 174.16 751 755 173.4
C 6 96 29429 165.41 751 755 173.4
D 1 52 2429965 13526.22 746 726 179.6
D 12 235 173277 960.78 746 726 179.6
D 8 195 66813 367.98 746 726 179.6

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