ASTROSAT CZTI

Data Quality Report

Orbit 48405

Creation date: 2024-09-09T17:47:30.557390
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_029T01_9000006426_48405cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48405cztM0_level2_quad_clean.evt
Size (bytes)562,216,320109,952,640
Size536.2 MB 104.9 MB
Events in quadrant A7,923,548703,202
Events in quadrant B4,353,369756,488
Events in quadrant C3,210,204751,770
Events in quadrant D4,783,701632,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292542
B0175172
C0144902
D0191882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69706699.598278%
B69714035.781093%
C6971911.305408%
D69716559.396069%

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 7915 6971 244 244 3.08% 3.50%
B 7916 6972 189 189 2.39% 2.71%
C 7916 6972 0 0 0.00% 0.00%
D 7916 6972 482 482 6.09% 6.91%

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 4182132 25943.24 771 754 161.2
A 13 248 763687 4733.6 771 754 161.2
A 13 254 12679 73.99 771 754 161.2
B 12 16 1026266 6519.29 784 758 157.3
B 4 21 139106 879.5 784 758 157.3
B 8 234 45248 282.83 784 758 157.3
C 1 16 65128 347.34 785 789 185.2
C 15 208 46484 246.69 785 789 185.2
C 14 254 29092 152.8 785 789 185.2
D 2 165 1541952 7979.55 773 750 193.1
D 2 249 117713 605.57 773 750 193.1
D 14 49 44014 224.0 773 750 193.1

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