ASTROSAT CZTI

Data Quality Report

Orbit 20612

Creation date: 2024-06-27T18:17:23.986710
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_003T04_9000003046_20612cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20612cztM0_level2_quad_clean.evt
Size (bytes)532,365,12071,055,360
Size507.7 MB 67.8 MB
Events in quadrant A3,552,280435,521
Events in quadrant B3,825,052439,449
Events in quadrant C4,143,530418,385
Events in quadrant D4,172,583416,074

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146602
B0154962
C0166112
D0166662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63291282.022436%
B63291472.322642%
C63291662.622847%
D63291832.891452%

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 7669 6330 13 13 0.17% 0.21%
B 7669 6330 10 10 0.13% 0.16%
C 7669 6330 11 11 0.14% 0.17%
D 7669 6330 75 75 0.98% 1.18%

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 84279 466.25 899 882 178.9
A 8 205 8416 42.12 899 882 178.9
A 0 226 7913 39.31 899 882 178.9
B 0 189 91759 548.37 890 871 165.7
B 7 220 79174 472.44 890 871 165.7
B 15 33 57772 343.31 890 871 165.7
C 3 9 210230 1050.73 862 871 199.3
C 9 54 159494 796.09 862 871 199.3
C 8 208 149442 745.64 862 871 199.3
D 2 165 267634 1272.97 879 857 209.6
D 5 222 165535 785.79 879 857 209.6
D 1 20 142423 675.51 879 857 209.6

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