ASTROSAT CZTI

Data Quality Report

Orbit 40057

Creation date: 2024-06-27T22:11:48.216179
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/AS1A12_054T03_9000005516_40057cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40057cztM0_level2_quad_clean.evt
Size (bytes)358,208,64088,698,240
Size341.6 MB 84.6 MB
Events in quadrant A3,015,220600,882
Events in quadrant B2,492,677624,595
Events in quadrant C4,163,152554,838
Events in quadrant D3,177,018535,193

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122173
B0110122
C0157892
D0132632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5287400.756573%
B5287100.189143%
C52874197.925099%
D52871272.402118%

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 7349 5288 29 29 0.39% 0.55%
B 7349 5288 1 1 0.01% 0.02%
C 7349 5288 385 385 5.24% 7.28%
D 7349 5288 105 105 1.43% 1.99%

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 10 83 451829 3804.02 577 566 118.6
A 15 223 218588 1837.87 577 566 118.6
A 7 3 60657 506.55 577 566 118.6
B 4 171 94186 842.32 577 564 111.1
B 0 221 77093 688.54 577 564 111.1
B 0 230 54095 481.62 577 564 111.1
C 9 187 1693685 13380.22 542 547 126.5
C 15 214 211859 1669.92 542 547 126.5
C 14 254 107288 843.53 542 547 126.5
D 12 227 432094 3173.62 556 543 136.0
D 2 250 180430 1322.89 556 543 136.0
D 10 246 91606 669.68 556 543 136.0

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