ASTROSAT CZTI

Data Quality Report

Orbit 50910

Creation date: 2025-03-19T10:53:49.936761
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/AS1C07_001T01_9000006450_50910cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50910cztM0_level2_quad_clean.evt
Size (bytes)644,250,24075,660,480
Size614.4 MB 72.2 MB
Events in quadrant A12,237,173251,911
Events in quadrant B4,283,222581,858
Events in quadrant C3,359,487541,589
Events in quadrant D3,498,193492,930

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0405311
B0172076
C0140841
D0150031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6050371061.322314%
B60504457.355372%
C6050851.404959%
D60502243.702479%

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 7025 6050 3462 3462 49.28% 57.22%
B 7025 6051 310 310 4.41% 5.12%
C 7025 6051 72 72 1.02% 1.19%
D 7025 6051 194 194 2.76% 3.21%

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 4 4 9144801 73109.16 490 476 125.1
A 7 206 251813 2009.45 490 476 125.1
A 7 207 244630 1952.02 490 476 125.1
B 4 170 1510775 11455.13 613 594 131.8
B 10 247 75009 564.46 613 594 131.8
B 8 128 69205 520.43 613 594 131.8
C 3 233 175761 1044.21 606 601 167.7
C 12 247 164589 977.61 606 601 167.7
C 13 3 155478 923.3 606 601 167.7
D 2 249 597529 3564.65 591 569 167.5
D 0 113 117548 698.52 591 569 167.5
D 3 12 101116 600.4 591 569 167.5

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