ASTROSAT CZTI

Data Quality Report

Orbit 54238

Creation date: 2025-10-07T14:10:01.681645
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/AS1C09_004T08_9000006514_54238cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54238cztM0_level2_quad_clean.evt
Size (bytes)753,955,20069,053,760
Size719.0 MB 65.9 MB
Events in quadrant A5,944,395487,855
Events in quadrant B3,393,679605,413
Events in quadrant C3,817,950507,386
Events in quadrant D14,289,99073,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217591
B0143141
C0158631
D0465791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5958112218.831823%
B59592554.279241%
C59594497.534821%
D5959522987.749622%

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 7008 5959 895 895 12.77% 15.02%
B 7009 5959 117 117 1.67% 1.96%
C 7009 5960 377 377 5.38% 6.33%
D 7009 5958 4559 4559 65.04% 76.52%

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 7 29 1747131 12054.56 584 570 144.9
A 12 17 1555347 10730.89 584 570 144.9
A 12 194 204793 1409.52 584 570 144.9
B 5 185 317650 2426.71 615 595 130.7
B 4 171 295369 2256.17 615 595 130.7
B 2 249 78605 597.08 615 595 130.7
C 12 2 650338 4044.96 578 572 160.6
C 15 198 596614 3710.52 578 572 160.6
C 15 215 95466 590.74 578 572 160.6
D 8 176 12941937 191080.1 230 219 67.7
D 3 12 173497 2558.39 230 219 67.7
D 8 160 90788 1337.22 230 219 67.7

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