ASTROSAT CZTI

Data Quality Report

Orbit 30474

Creation date: 2024-06-27T20:15:43.444533
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/AS1A10_058T03_9000004380_30474cztM0_level2.evt modeM0/AS1A10_058T03_9000004380_30474cztM0_level2_quad_clean.evt
Size (bytes)648,642,240108,475,200
Size618.6 MB 103.5 MB
Events in quadrant A3,549,566721,557
Events in quadrant B5,822,553714,791
Events in quadrant C4,147,474677,101
Events in quadrant D5,618,111650,679

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154652
B0228282
C0173262
D0217823

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7490580.774366%
B74911722.296089%
C74911642.189294%
D74904876.502003%

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 7800 7492 2 2 0.03% 0.03%
B 7801 7493 8 8 0.10% 0.11%
C 7801 7493 18 18 0.23% 0.24%
D 7800 7492 444 444 5.69% 5.93%

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 8 192 23603 123.8 912 894 183.4
A 13 254 14800 75.81 912 894 183.4
A 3 137 9254 45.58 912 894 183.4
B 6 159 2148053 12429.61 899 877 172.7
B 4 171 29917 168.11 899 877 172.7
B 0 229 26901 150.65 899 877 172.7
C 3 233 348766 1727.55 859 865 201.4
C 15 208 196915 973.51 859 865 201.4
C 14 238 142868 705.14 859 865 201.4
D 13 104 1673775 8236.68 853 831 203.1
D 8 195 208975 1024.79 853 831 203.1
D 13 249 126465 618.55 853 831 203.1

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