ASTROSAT CZTI

Data Quality Report

Orbit 20884

Creation date: 2024-06-27T18:20:43.610969
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/AS1A06_002T03_9000003080_20884cztM0_level2.evt modeM0/AS1A06_002T03_9000003080_20884cztM0_level2_quad_clean.evt
Size (bytes)1,182,024,000214,248,960
Size1.1 GB 204.3 MB
Events in quadrant A7,919,2761,359,296
Events in quadrant B9,023,0631,361,346
Events in quadrant C8,149,9471,327,249
Events in quadrant D9,562,4801,275,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03455539
B03780041
C03484459
D03993048

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03460
B03462
C03460
D03460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16900460.272189%
B169001901.124260%
C168921450.858395%
D169003732.207101%

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 20063 16919 0 0 0.00% 0.00%
B 20064 16916 57 57 0.28% 0.34%
C 20064 16913 23 23 0.11% 0.14%
D 20063 16914 301 301 1.50% 1.78%

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 12 96 36748 85.31 2043 2003 407.3
A 6 16 28025 63.9 2043 2003 407.3
A 0 226 17221 37.37 2043 2003 407.3
B 7 220 366696 946.81 2044 1995 385.2
B 0 189 250051 643.98 2044 1995 385.2
B 0 197 97328 247.5 2044 1995 385.2
C 14 238 314237 685.76 1964 1981 455.3
C 9 54 99728 214.67 1964 1981 455.3
C 10 91 46295 97.32 1964 1981 455.3
D 1 239 924124 1954.95 1969 1915 471.7
D 1 52 775728 1640.38 1969 1915 471.7
D 14 35 103059 214.41 1969 1915 471.7

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