ASTROSAT CZTI

Data Quality Report

Orbit 20230815_A05_174T01_9000005820_level2

Creation date: 2023-08-21T11:45:36.419106
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/AS1A05_174T01_9000005820cztM0_level2.fits modeM0/AS1A05_174T01_9000005820cztM0_level2_quad_clean.evt
Size (bytes)1,582,326,7201,552,138,560
Size1.5 GB 1.4 GB
Events in quadrant A9,461,2889,151,669
Events in quadrant B9,112,0029,196,764
Events in quadrant C9,423,2368,827,007
Events in quadrant D7,905,0407,816,623

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06740
B06740
C06740
D06730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035220
B035220
C035220
D035220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03998950
B03701030
C03635840
D04871530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17561615640.890579%
B17561813630.776116%
C1756195040.286985%
D175619106746.077930%

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 242904 175623 0 0 0.00% 0.00%
B 242904 175619 0 0 0.00% 0.00%
C 242904 175617 0 0 0.00% 0.00%
D 242904 175448 0 0 0.00% 0.00%

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 7 110 7804 8.87 2468 2300 620.2
A 0 29 7669 8.66 2468 2300 620.2
A 9 19 7647 8.62 2468 2300 620.2
B 2 9 8039 12.29 2406 2283 468.5
B 3 80 6601 9.22 2406 2283 468.5
B 2 8 6416 8.82 2406 2283 468.5
C 1 81 7615 8.27 2492 2333 638.6
C 3 203 7362 7.88 2492 2333 638.6
C 3 202 7356 7.87 2492 2333 638.6
D 4 160 5965 6.49 2266 2062 601.8
D 10 189 5850 6.29 2266 2062 601.8
D 7 3 5825 6.25 2266 2062 601.8

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