ASTROSAT CZTI

Data Quality Report

Orbit 20180715_G08_046T09_9000002226_level2

Creation date: 2025-11-23T12:31:07.475214
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/AS1G08_046T09_9000002226cztM0_level2.fits modeM0/AS1G08_046T09_9000002226cztM0_level2_quad_clean.evt
Size (bytes)632,111,040548,884,800
Size602.8 MB 523.5 MB
Events in quadrant A3,880,9283,209,606
Events in quadrant B3,676,6003,094,867
Events in quadrant C3,736,0542,955,453
Events in quadrant D3,262,5322,775,951

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01388090
B01632210
C01649280
D01461100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013640
B013640
C013640
D013640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A668596901.032023%
B6685929744.448167%
C6685917572.627918%
D6685913812.065541%

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 78539 66855 0 0 0.00% 0.00%
B 78539 66817 0 0 0.00% 0.00%
C 78539 66834 0 0 0.00% 0.00%
D 78539 66799 0 0 0.00% 0.00%

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 29 3875 11.71 1009 943 250.4
A 7 110 3138 8.77 1009 943 250.4
A 0 30 2978 8.13 1009 943 250.4
B 2 9 3014 11.08 971 929 188.2
B 3 17 2540 8.56 971 929 188.2
B 14 254 2377 7.69 971 929 188.2
C 12 241 2722 7.04 989 922 255.6
C 3 126 2527 6.28 989 922 255.6
C 2 191 2470 6.06 989 922 255.6
D 3 14 2392 6.18 932 846 250.2
D 6 231 2375 6.11 932 846 250.2
D 10 189 2302 5.82 932 846 250.2

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