ASTROSAT CZTI

Data Quality Report

Orbit 19994

Creation date: 2024-06-27T18:09:50.093640
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/AS1A06_002T02_9000002982_19994cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19994cztM0_level2_quad_clean.evt
Size (bytes)518,333,760108,365,760
Size494.3 MB 103.3 MB
Events in quadrant A3,627,739699,778
Events in quadrant B3,919,295702,946
Events in quadrant C3,794,814675,842
Events in quadrant D3,839,527674,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159072
B0168392
C0162603
D0167872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7603620.815468%
B76041742.288269%
C76031692.222807%
D7603580.762857%

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 7832 7602 0 0 0.00% 0.00%
B 7833 7603 16 16 0.20% 0.21%
C 7832 7602 0 0 0.00% 0.00%
D 7832 7602 22 22 0.28% 0.29%

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 14 238 14536 71.54 935 917 190.4
A 0 226 8191 38.21 935 917 190.4
A 13 254 8055 37.5 935 917 190.4
B 7 220 163322 911.91 930 908 178.1
B 0 190 29790 162.16 930 908 178.1
B 12 111 21750 117.02 930 908 178.1
C 14 238 139219 648.95 899 906 213.1
C 3 233 127903 595.86 899 906 213.1
C 0 207 9205 38.94 899 906 213.1
D 1 52 282740 1278.0 910 884 220.5
D 2 234 36235 160.29 910 884 220.5
D 14 50 32692 144.23 910 884 220.5

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