ASTROSAT CZTI

Data Quality Report

Orbit 48604

Creation date: 2024-09-23T03:13:51.222173
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_037T01_9000006436_48604cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48604cztM0_level2_quad_clean.evt
Size (bytes)426,516,480102,196,800
Size406.8 MB 97.5 MB
Events in quadrant A6,611,933658,958
Events in quadrant B2,946,757699,637
Events in quadrant C2,708,157679,637
Events in quadrant D3,026,229611,379

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236494
B0135732
C0130192
D0139762

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63733044.770124%
B63731422.228150%
C6373360.564883%
D6373911.427899%

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 7488 6374 136 136 1.82% 2.13%
B 7488 6374 61 61 0.81% 0.96%
C 7488 6374 1 1 0.01% 0.02%
D 7488 6374 55 55 0.73% 0.86%

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 3965652 28326.75 674 660 140.0
A 13 248 23849 165.67 674 660 140.0
A 13 254 12533 84.82 674 660 140.0
B 0 186 207891 1539.28 683 660 134.6
B 0 183 27697 200.82 683 660 134.6
B 12 111 16878 120.46 683 660 134.6
C 14 254 19251 114.96 683 688 161.5
C 12 249 16429 97.49 683 688 161.5
C 3 233 7690 43.36 683 688 161.5
D 13 171 170798 1018.28 672 651 167.1
D 2 165 106629 634.25 672 651 167.1
D 2 249 66208 392.34 672 651 167.1

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