ASTROSAT CZTI

Data Quality Report

Orbit 43896

Creation date: 2024-06-27T22:56:57.198248
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_009T02_9000005914_43896cztM0_level2.fits modeM0/AS1A13_009T02_9000005914_43896cztM0_level2_quad_clean.evt
Size (bytes)478,840,32099,342,720
Size456.7 MB 94.7 MB
Events in quadrant A6,549,695622,283
Events in quadrant B3,171,324706,273
Events in quadrant C2,842,811674,221
Events in quadrant D4,685,165577,290

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242001
B0133481
C0127031
D0180431

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A612680613.157036%
B61271462.382895%
C6127490.799739%
D61275018.176922%

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 7141 6127 542 542 7.59% 8.85%
B 7142 6128 39 39 0.55% 0.64%
C 7142 6128 6 6 0.08% 0.10%
D 7142 6128 404 404 5.66% 6.59%

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 15 223 2592189 18361.48 682 667 141.1
A 10 83 904785 6405.87 682 667 141.1
A 15 222 303805 2147.8 682 667 141.1
B 5 172 172264 1242.69 701 679 138.1
B 0 200 93216 670.19 701 679 138.1
B 0 199 40165 285.97 701 679 138.1
C 3 233 68256 416.6 688 691 162.2
C 14 254 49594 301.53 688 691 162.2
C 11 16 18072 107.17 688 691 162.2
D 5 235 516760 3015.37 674 651 171.2
D 12 233 396618 2313.44 674 651 171.2
D 2 249 289062 1685.04 674 651 171.2

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