ASTROSAT CZTI

Data Quality Report

Orbit 26609

Creation date: 2024-06-27T19:30:57.388805
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_095T02_9000003846_26609cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26609cztM0_level2_quad_clean.evt
Size (bytes)545,160,96098,959,680
Size519.9 MB 94.4 MB
Events in quadrant A3,272,041651,456
Events in quadrant B3,607,880656,957
Events in quadrant C3,423,883628,043
Events in quadrant D5,747,486588,759

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140470
B0149580
C0144180
D0216050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6770390.576071%
B6770991.462334%
C6770851.255539%
D677074410.989660%

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 7440 6771 1 1 0.01% 0.01%
B 7440 6771 18 18 0.24% 0.27%
C 7440 6771 8 8 0.11% 0.12%
D 7440 6771 616 616 8.28% 9.10%

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 54084 323.15 830 813 164.8
A 13 254 11881 67.14 830 813 164.8
A 5 168 11136 62.62 830 813 164.8
B 0 189 191515 1238.01 819 798 154.1
B 3 64 97335 626.65 819 798 154.1
B 5 172 54029 345.54 819 798 154.1
C 3 233 166102 907.56 789 792 182.1
C 14 238 127652 696.47 789 792 182.1
C 15 208 50420 272.46 789 792 182.1
D 1 52 1858577 10283.11 762 741 180.7
D 7 80 492806 2723.58 762 741 180.7
D 2 250 420035 2320.79 762 741 180.7

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