ASTROSAT CZTI

Data Quality Report

Orbit 51391

Creation date: 2025-03-29T22:45:41.299970
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/AS1C07_001T03_9000006456_51391cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51391cztM0_level2_quad_clean.evt
Size (bytes)422,354,88046,180,800
Size402.8 MB 44.0 MB
Events in quadrant A4,131,933327,447
Events in quadrant B2,107,493372,356
Events in quadrant C7,088,848117,891
Events in quadrant D2,012,802315,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0813
B0802
C0793
D0791

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015877975
B09339315
C0246931096
D09116443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121
B0121
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37393308.825889%
B37841674.413319%
C3740265270.909091%
D3761862.286626%

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 6080 3773 257 257 4.23% 6.81%
B 6083 3813 95 95 1.56% 2.49%
C 6080 3751 2379 2379 39.13% 63.42%
D 6079 3801 26 26 0.43% 0.68%

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 12 3 1674519 17764.06 376 366 94.2
A 15 174 367775 3898.49 376 366 94.2
A 12 194 190510 2017.58 376 366 94.2
B 5 185 276581 3307.09 387 372 83.5
B 0 171 54925 653.17 387 372 83.5
B 5 172 42970 510.03 387 372 83.5
C 15 179 5583233 82002.57 245 243 68.1
C 4 12 131096 1921.96 245 243 68.1
C 15 248 89218 1306.86 245 243 68.1
D 11 176 135228 1272.53 379 366 106.0
D 15 187 54412 509.96 379 366 106.0
D 7 46 44906 420.27 379 366 106.0

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