ASTROSAT CZTI

Data Quality Report

Orbit 26135

Creation date: 2024-06-27T19:25:13.362157
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/AS1A09_138T04_9000003776_26135cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26135cztM0_level2_quad_clean.evt
Size (bytes)1,041,168,960154,393,920
Size992.9 MB 147.2 MB
Events in quadrant A8,865,681958,656
Events in quadrant B6,229,661995,546
Events in quadrant C6,339,230938,271
Events in quadrant D9,257,997923,333

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346460
B0263820
C0266130
D0357940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124453672.948975%
B124451240.996384%
C124451911.534753%
D124442261.816136%

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 13795 12445 176 176 1.28% 1.41%
B 13795 12445 14 14 0.10% 0.11%
C 13795 12445 33 33 0.24% 0.27%
D 13794 12444 127 127 0.92% 1.02%

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 0 13 2956786 9746.78 1496 1462 303.2
A 3 1 139149 454.1 1496 1462 303.2
A 13 254 20860 63.98 1496 1462 303.2
B 0 190 122334 419.68 1501 1461 288.0
B 5 172 108231 370.72 1501 1461 288.0
B 0 229 98835 338.09 1501 1461 288.0
C 2 16 406145 1193.58 1443 1452 339.1
C 14 238 232218 680.61 1443 1452 339.1
C 3 233 75607 218.71 1443 1452 339.1
D 1 52 3351393 9641.25 1461 1425 347.5
D 12 233 206541 590.33 1461 1425 347.5
D 2 234 54606 153.05 1461 1425 347.5

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