ASTROSAT CZTI

Data Quality Report

Orbit 31388

Creation date: 2024-06-27T20:27:39.904742
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/AS1T04_027T01_9000004552_31388cztM0_level2.evt modeM0/AS1T04_027T01_9000004552_31388cztM0_level2_quad_clean.evt
Size (bytes)617,028,480109,373,760
Size588.4 MB 104.3 MB
Events in quadrant A3,589,838718,772
Events in quadrant B6,228,926697,340
Events in quadrant C3,976,585689,355
Events in quadrant D4,381,012682,559

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156052
B0240182
C0167783
D0181442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7539871.153999%
B75403424.535809%
C75391371.817217%
D7539921.220321%

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 7914 7540 3 3 0.04% 0.04%
B 7915 7541 120 120 1.52% 1.59%
C 7914 7540 4 4 0.05% 0.05%
D 7914 7540 33 33 0.42% 0.44%

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 5 16 21696 112.08 923 901 185.5
A 13 254 14844 75.15 923 901 185.5
A 3 137 9678 47.31 923 901 185.5
B 6 159 2082651 12020.71 898 876 173.2
B 5 172 397557 2290.54 898 876 173.2
B 4 80 53790 305.54 898 876 173.2
C 3 233 336991 1642.81 872 877 204.6
C 14 238 140785 683.82 872 877 204.6
C 0 10 44506 213.24 872 877 204.6
D 8 195 768325 3628.68 888 865 211.5
D 2 250 90849 425.46 888 865 211.5
D 13 249 80684 377.4 888 865 211.5

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