ASTROSAT CZTI

Data Quality Report

Orbit 11120

Creation date: 2024-06-27T16:08:33.786877
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_071T02_9000001620_11120cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11120cztM0_level2_quad_clean.evt
Size (bytes)780,742,08084,850,560
Size744.6 MB 80.9 MB
Events in quadrant A4,733,992521,259
Events in quadrant B4,961,214518,857
Events in quadrant C3,902,934523,027
Events in quadrant D9,491,561435,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192773
B0199432
C0172342
D0337452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81974926.002196%
B81975977.283152%
C81972613.184092%
D8197228627.888252%

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 8867 8198 70 70 0.79% 0.85%
B 8867 8199 118 118 1.33% 1.44%
C 8867 8199 0 0 0.00% 0.00%
D 8867 8199 1687 1687 19.03% 20.58%

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 5 742630 3534.95 1015 985 209.8
A 15 174 32123 148.42 1015 985 209.8
A 8 15 29026 133.65 1015 985 209.8
B 4 239 760761 3831.74 1014 988 198.3
B 10 16 80745 402.24 1014 988 198.3
B 11 51 51270 253.59 1014 988 198.3
C 13 61 7447 27.47 998 1001 234.7
C 9 204 5874 20.77 998 1001 234.7
C 12 4 3584 11.01 998 1001 234.7
D 14 34 2997982 13881.21 885 858 215.9
D 10 253 1473892 6822.37 885 858 215.9
D 2 120 963636 4459.11 885 858 215.9

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