ASTROSAT CZTI

Data Quality Report

Orbit 11240

Creation date: 2024-06-27T16:10:10.564954
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/AS1T01_200T01_9000001638_11240cztM0_level2.evt modeM0/AS1T01_200T01_9000001638_11240cztM0_level2_quad_clean.evt
Size (bytes)1,526,705,280317,903,040
Size1.4 GB 303.2 MB
Events in quadrant A13,971,4822,059,101
Events in quadrant B10,344,7432,132,890
Events in quadrant C7,976,8762,156,478
Events in quadrant D12,716,9902,026,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0538934
B0427983
C0369593
D0498353

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1818613327.324315%
B181865963.277246%
C181861090.599362%
D181866233.425712%

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 19985 18189 694 694 3.47% 3.82%
B 19986 18190 241 241 1.21% 1.32%
C 19986 18190 1 1 0.01% 0.01%
D 19986 18190 359 359 1.80% 1.97%

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 4068970 9908.76 2021 1975 410.4
A 15 174 972642 2364.92 2021 1975 410.4
A 14 238 936452 2276.75 2021 1975 410.4
B 4 239 1560663 3973.15 2059 2001 392.3
B 4 81 220167 556.12 2059 2001 392.3
B 11 51 130762 328.22 2059 2001 392.3
C 12 4 38070 76.84 2026 2031 469.0
C 14 234 15084 27.83 2026 2031 469.0
C 13 61 15067 27.8 2026 2031 469.0
D 8 195 1305901 2677.89 2002 1940 486.9
D 12 157 967047 1982.0 2002 1940 486.9
D 1 52 783501 1605.06 2002 1940 486.9

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