ASTROSAT CZTI

Data Quality Report

Orbit 47278

Creation date: 2024-06-27T23:33:39.766417
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/AS1A13_025T01_9000006312_47278cztM0_level2.fits modeM0/AS1A13_025T01_9000006312_47278cztM0_level2_quad_clean.evt
Size (bytes)472,852,80088,018,560
Size450.9 MB 83.9 MB
Events in quadrant A6,070,923594,708
Events in quadrant B2,961,360615,464
Events in quadrant C2,508,459575,147
Events in quadrant D5,524,021483,427

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219527
B0124912
C0116714
D0202120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56571312.315715%
B5659410.724510%
C5657190.335867%
D565967111.857219%

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 5659 5658 48 48 0.85% 0.85%
B 5660 5660 24 24 0.42% 0.42%
C 5659 5658 14 14 0.25% 0.25%
D 5659 5659 629 629 11.12% 11.12%

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 3010492 22824.9 623 610 131.9
A 9 191 524434 3972.32 623 610 131.9
A 15 235 107619 811.48 623 610 131.9
B 0 200 173916 1409.81 624 606 122.9
B 0 190 82342 664.89 624 606 122.9
B 0 198 64401 518.95 624 606 122.9
C 14 254 117917 802.89 610 611 146.1
C 3 233 4259 24.97 610 611 146.1
C 13 61 4118 24.0 610 611 146.1
D 6 112 2946385 19661.87 588 569 149.8
D 12 233 131011 870.64 588 569 149.8
D 10 181 54613 360.72 588 569 149.8

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