ASTROSAT CZTI

Data Quality Report

Orbit 44888

Creation date: 2024-06-27T23:07:39.479867
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_017T02_9000006032_44888cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44888cztM0_level2_quad_clean.evt
Size (bytes)1,971,308,160418,196,160
Size1.8 GB 398.8 MB
Events in quadrant A20,089,2942,793,942
Events in quadrant B13,630,2422,880,675
Events in quadrant C11,841,8452,811,254
Events in quadrant D25,387,1602,373,186

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05260
B05260
C05260
D05260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0807373
B05879213
C0545686
D0938039

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A262115241.999161%
B262055722.182790%
C26209830.316685%
D26210268710.251812%

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 27336 26214 56 56 0.20% 0.21%
B 27336 26212 131 131 0.48% 0.50%
C 27336 26213 11 11 0.04% 0.04%
D 27336 26214 1895 1895 6.93% 7.23%

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 10 83 8092402 12984.95 2991 2925 623.0
A 13 248 154632 243.51 2991 2925 623.0
A 10 248 140909 221.49 2991 2925 623.0
B 5 255 589135 989.56 2986 2890 592.4
B 0 219 329267 550.91 2986 2890 592.4
B 0 190 192223 319.59 2986 2890 592.4
C 14 254 128500 181.04 2946 2963 693.4
C 2 14 91284 127.37 2946 2963 693.4
C 3 233 62350 85.64 2946 2963 693.4
D 1 52 6320624 8757.26 2842 2758 721.4
D 13 174 1765666 2443.59 2842 2758 721.4
D 2 249 1520585 2103.88 2842 2758 721.4

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