ASTROSAT CZTI

Data Quality Report

Orbit 25330

Creation date: 2024-06-27T19:16:26.707912
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/AS1A09_059T01_9000003706_25330cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25330cztM0_level2_quad_clean.evt
Size (bytes)544,057,920105,721,920
Size518.9 MB 100.8 MB
Events in quadrant A3,580,087720,952
Events in quadrant B3,398,471723,153
Events in quadrant C3,732,091672,085
Events in quadrant D5,351,341657,744

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146850
B0138980
C0150010
D0205770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6128811.321802%
B6127861.403623%
C61271572.562429%
D61271262.056471%

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 7478 6129 0 0 0.00% 0.00%
B 7477 6128 1 1 0.01% 0.02%
C 7477 6128 20 20 0.27% 0.33%
D 7477 6129 60 60 0.80% 0.98%

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 15 173 153674 878.54 888 876 173.9
A 13 254 9880 51.77 888 876 173.9
A 0 226 7637 38.87 888 876 173.9
B 12 111 18174 109.29 863 847 158.5
B 0 190 17553 105.38 863 847 158.5
B 11 111 16679 99.86 863 847 158.5
C 9 54 378400 2010.78 823 830 187.8
C 14 238 135793 718.76 823 830 187.8
C 13 61 5506 24.9 823 830 187.8
D 8 195 1504452 7536.36 850 830 199.5
D 1 52 357010 1785.22 850 830 199.5
D 12 235 122582 610.24 850 830 199.5

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