ASTROSAT CZTI

Data Quality Report

Orbit 27429

Creation date: 2024-06-27T19:39:58.896080
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/AS1T03_249T01_9000003934_27429cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27429cztM0_level2_quad_clean.evt
Size (bytes)550,465,920102,090,240
Size525.0 MB 97.4 MB
Events in quadrant A3,372,740679,028
Events in quadrant B3,434,023693,027
Events in quadrant C3,792,534650,464
Events in quadrant D5,631,038616,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137400
B0140180
C0152240
D0210390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6498390.600185%
B6498600.923361%
C64981432.200677%
D649870410.834103%

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 7763 6499 0 0 0.00% 0.00%
B 7763 6499 0 0 0.00% 0.00%
C 7763 6499 38 38 0.49% 0.58%
D 7763 6499 601 601 7.74% 9.25%

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 13 254 9503 50.34 873 859 171.7
A 0 226 7505 38.71 873 859 171.7
A 3 137 7384 38.0 873 859 171.7
B 12 111 18842 110.46 867 846 162.9
B 11 111 17143 100.03 867 846 162.9
B 14 111 16061 93.39 867 846 162.9
C 7 221 275894 1441.65 828 834 190.8
C 14 238 136625 711.71 828 834 190.8
C 10 22 82634 428.73 828 834 190.8
D 1 52 2240466 12058.56 796 779 185.7
D 13 168 145275 777.97 796 779 185.7
D 2 250 105709 564.95 796 779 185.7

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