ASTROSAT CZTI

Data Quality Report

Orbit 50628

Creation date: 2025-02-06T12:17:49.954515
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/AS1T05_239T01_9000006444_50628cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50628cztM0_level2_quad_clean.evt
Size (bytes)708,819,84092,471,040
Size676.0 MB 88.2 MB
Events in quadrant A4,440,917630,068
Events in quadrant B8,900,739550,582
Events in quadrant C6,304,769569,010
Events in quadrant D6,045,054558,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018136201
B031609236
C024096117
D02310495

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01422
D01422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70542823.997732%
B7059183926.051849%
C705894413.374894%
D70675427.669450%

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 7110 7076 167 167 2.35% 2.36%
B 7077 7072 1430 1430 20.21% 20.22%
C 7088 7077 834 834 11.77% 11.78%
D 7111 7083 643 643 9.04% 9.08%

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 12 250 618846 3464.01 722 702 178.4
A 3 114 175264 978.23 722 702 178.4
A 4 3 170510 951.59 722 702 178.4
B 4 170 5397163 38204.25 663 641 141.3
B 5 185 213131 1504.31 663 641 141.3
B 6 51 123611 870.56 663 641 141.3
C 15 174 1812539 9710.69 680 675 186.6
C 4 12 536433 2871.4 680 675 186.6
C 15 199 331076 1770.78 680 675 186.6
D 8 246 1383702 7206.48 690 667 191.9
D 15 108 550488 2864.91 690 667 191.9
D 5 32 186841 970.08 690 667 191.9

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