ASTROSAT CZTI

Data Quality Report

Orbit 17619

Creation date: 2024-06-27T17:38:44.388821
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_071T01_9000002610_17619cztM0_level2.evt modeM0/AS1T03_071T01_9000002610_17619cztM0_level2_quad_clean.evt
Size (bytes)531,771,84079,404,480
Size507.1 MB 75.7 MB
Events in quadrant A3,664,570483,583
Events in quadrant B3,673,473485,040
Events in quadrant C4,660,224455,808
Events in quadrant D3,602,785463,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156792
B0155962
C0188632
D0158502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74211882.533351%
B74221762.371328%
C74222703.637833%
D74221912.573430%

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 8596 7423 11 11 0.13% 0.15%
B 8597 7423 1 1 0.01% 0.01%
C 8597 7422 12 12 0.14% 0.16%
D 8597 7423 23 23 0.27% 0.31%

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 14 237 110505 583.13 924 906 187.9
A 0 226 8195 38.78 924 906 187.9
A 3 137 6848 31.62 924 906 187.9
B 0 230 32097 174.61 918 892 178.7
B 12 111 20963 112.31 918 892 178.7
B 11 111 18483 98.43 918 892 178.7
C 3 233 957962 4660.69 871 876 205.4
C 14 238 134083 648.67 871 876 205.4
C 0 207 103623 500.34 871 876 205.4
D 13 189 97769 441.19 897 867 219.6
D 1 52 60893 273.29 897 867 219.6
D 2 234 26286 115.73 897 867 219.6

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