ASTROSAT CZTI

Data Quality Report

Orbit 26346

Creation date: 2024-06-27T19:27:42.686687
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/AS1A09_008T02_9000003796_26346cztM0_level2.evt modeM0/AS1A09_008T02_9000003796_26346cztM0_level2_quad_clean.evt
Size (bytes)430,542,72075,755,520
Size410.6 MB 72.2 MB
Events in quadrant A1,793,323541,274
Events in quadrant B1,848,431559,359
Events in quadrant C2,402,615534,594
Events in quadrant D6,732,450385,779

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078110
B079240
C094990
D0226010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A385310.025954%
B385360.155723%
C38531152.984687%
D3853175645.574877%

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 3853 3853 0 0 0.00% 0.00%
B 3853 3853 0 0 0.00% 0.00%
C 3853 3853 60 60 1.56% 1.56%
D 3853 3853 1754 1754 45.52% 45.52%

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 6205 61.89 464 455 92.9
A 0 226 3972 37.85 464 455 92.9
A 3 137 3881 36.87 464 455 92.9
B 0 230 10737 118.13 467 455 87.0
B 12 111 10040 110.12 467 455 87.0
B 11 111 9119 99.54 467 455 87.0
C 3 233 523571 4858.03 459 464 107.7
C 14 238 74378 686.43 459 464 107.7
C 2 16 11267 100.33 459 464 107.7
D 1 52 5348098 62152.79 363 355 86.0
D 2 234 11869 133.82 363 355 86.0
D 11 176 4904 52.87 363 355 86.0

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