ASTROSAT CZTI

Data Quality Report

Orbit 12554

Creation date: 2024-06-27T16:29:08.836971
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/AS1A04_201T03_9000001862_12554cztM0_level2.evt modeM0/AS1A04_201T03_9000001862_12554cztM0_level2_quad_clean.evt
Size (bytes)501,681,60089,271,360
Size478.4 MB 85.1 MB
Events in quadrant A3,433,034546,826
Events in quadrant B4,149,323562,799
Events in quadrant C3,308,014555,749
Events in quadrant D3,811,051533,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149542
B0169731
C0149191
D0161961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72422032.803093%
B72423184.391052%
C72421532.112676%
D72421772.444076%

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 7308 7244 0 0 0.00% 0.00%
B 7308 7244 69 69 0.94% 0.95%
C 7308 7244 1 1 0.01% 0.01%
D 7308 7244 21 21 0.29% 0.29%

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 8 15 67223 369.09 866 844 179.8
A 1 162 11844 61.16 866 844 179.8
A 12 189 7896 39.21 866 844 179.8
B 4 239 549168 3281.25 864 839 167.1
B 0 230 49217 289.5 864 839 167.1
B 0 214 44766 262.86 864 839 167.1
C 3 233 6752 29.95 844 845 197.2
C 13 61 6189 27.1 844 845 197.2
C 8 128 4459 18.33 844 845 197.2
D 1 52 416719 2040.94 842 817 203.8
D 13 249 53754 259.78 842 817 203.8
D 8 195 50679 244.69 842 817 203.8

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