ASTROSAT CZTI

Data Quality Report

Orbit 32284

Creation date: 2024-06-27T20:38:27.789534
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_131T01_9000004696_32284cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32284cztM0_level2_quad_clean.evt
Size (bytes)571,461,120115,024,320
Size545.0 MB 109.7 MB
Events in quadrant A3,206,983757,537
Events in quadrant B5,374,004761,899
Events in quadrant C3,578,646750,697
Events in quadrant D4,675,154727,999

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142993
B0212422
C0151232
D0188792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69581101.580914%
B69582002.874389%
C69582343.363035%
D69581822.615694%

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 7123 6961 0 0 0.00% 0.00%
B 7123 6961 8 8 0.11% 0.11%
C 7123 6961 0 0 0.00% 0.00%
D 7123 6961 48 48 0.67% 0.69%

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 13047 73.34 828 809 166.9
A 3 137 8625 46.84 828 809 166.9
A 0 226 7050 37.4 828 809 166.9
B 6 159 1992041 12698.24 819 798 156.8
B 0 229 33633 209.39 819 798 156.8
B 3 209 31434 195.37 819 798 156.8
C 14 238 167671 909.63 793 796 183.5
C 0 10 126161 683.36 793 796 183.5
C 14 254 55101 296.02 793 796 183.5
D 8 195 1194729 6269.61 801 779 190.4
D 14 52 107514 560.48 801 779 190.4
D 13 249 105990 552.48 801 779 190.4

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