ASTROSAT CZTI

Data Quality Report

Orbit 04771

Creation date: 2024-06-27T14:46:46.284817
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/AS1G05_218T05_9000000602_04771cztM0_level2.evt modeM0/AS1G05_218T05_9000000602_04771cztM0_level2_quad_clean.evt
Size (bytes)1,657,529,280204,114,240
Size1.5 GB 194.7 MB
Events in quadrant A8,444,3571,286,780
Events in quadrant B9,407,7141,270,849
Events in quadrant C19,489,6111,151,312
Events in quadrant D11,626,4301,214,251

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374645
B0398564
C0702274
D0471554

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182472671.463254%
B182472831.550940%
C18247377520.688332%
D182474672.559325%

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 20462 18247 11 11 0.05% 0.06%
B 20462 18249 11 11 0.05% 0.06%
C 20462 18247 2763 2763 13.50% 15.14%
D 20462 18249 266 266 1.30% 1.46%

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 15 148160 343.5 2099 2047 425.4
A 0 149 51311 115.82 2099 2047 425.4
A 13 14 38212 85.02 2099 2047 425.4
B 4 80 486380 1192.59 2115 2064 406.1
B 15 204 361833 885.9 2115 2064 406.1
B 14 167 221683 540.79 2115 2064 406.1
C 14 48 12130764 27949.56 1869 1878 434.0
C 1 16 39989 87.82 1869 1878 434.0
C 12 4 16586 33.89 1869 1878 434.0
D 11 132 1577957 3236.33 2025 1966 487.0
D 13 235 1399346 2869.55 2025 1966 487.0
D 2 136 413778 845.66 2025 1966 487.0

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