ASTROSAT CZTI

Data Quality Report

Orbit 36225

Creation date: 2022-06-13T12:11:04.061320
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/AS1A11_080T02_9000005176_36225cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36225cztM0_level2_quad_clean.evt
Size (bytes)833,368,320117,466,560
Size794.8 MB 112.0 MB
Events in quadrant A3,788,507800,250
Events in quadrant B6,517,353773,607
Events in quadrant C3,913,545791,759
Events in quadrant D10,490,101645,677

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162673
B0244702
C0163102
D0365212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7837150.191400%
B78376998.919229%
C7837230.293480%
D7837192024.499171%

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 9150 7838 6 6 0.07% 0.08%
B 9150 7838 529 529 5.78% 6.75%
C 9150 7838 12 12 0.13% 0.15%
D 9150 7838 1893 1893 20.69% 24.15%

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 243253 1337.32 890 870 181.2
A 9 143 36475 196.45 890 870 181.2
A 15 223 35924 193.41 890 870 181.2
B 0 213 1138320 6898.97 861 838 164.9
B 5 236 1101569 6676.07 861 838 164.9
B 5 172 717773 4348.3 861 838 164.9
C 15 214 330630 1617.35 869 874 203.9
C 0 10 119739 583.0 869 874 203.9
C 0 207 72077 349.23 869 874 203.9
D 12 227 5506067 28492.78 788 765 193.2
D 12 235 643108 3324.46 788 765 193.2
D 12 6 551585 2850.78 788 765 193.2

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