ASTROSAT CZTI

Data Quality Report

Orbit 51644

Creation date: 2025-04-15T23:39:14.222951
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/AS1A13_037T05_9000006460_51644cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51644cztM0_level2_quad_clean.evt
Size (bytes)555,062,400108,838,080
Size529.3 MB 103.8 MB
Events in quadrant A5,260,426693,928
Events in quadrant B4,727,907763,064
Events in quadrant C5,311,147679,264
Events in quadrant D4,665,185637,223

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210010
B0192140
C0208100
D0192060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75004215.613333%
B75002763.680000%
C75002933.906667%
D75012363.146247%

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 7500 7500 210 210 2.80% 2.80%
B 7500 7500 74 74 0.99% 0.99%
C 7500 7500 245 245 3.27% 3.27%
D 7501 7501 209 209 2.79% 2.79%

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 796106 3912.22 827 804 203.3
A 4 175 248352 1217.73 827 804 203.3
A 3 22 210305 1030.57 827 804 203.3
B 0 171 285888 1611.47 825 798 176.9
B 4 170 174294 980.69 825 798 176.9
B 4 174 161123 906.24 825 798 176.9
C 15 189 682126 3075.53 805 797 221.5
C 12 254 431058 1942.21 805 797 221.5
C 5 250 196963 885.5 805 797 221.5
D 8 176 493140 2223.36 800 773 221.5
D 5 113 258149 1162.22 800 773 221.5
D 2 249 246744 1110.72 800 773 221.5

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