ASTROSAT CZTI

Data Quality Report

Orbit 31470

Creation date: 2024-06-27T20:28:55.833827
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_029T01_9000004582_31470cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31470cztM0_level2_quad_clean.evt
Size (bytes)543,075,84077,198,400
Size517.9 MB 73.6 MB
Events in quadrant A3,285,017494,014
Events in quadrant B5,171,507501,213
Events in quadrant C4,012,765448,003
Events in quadrant D3,552,582455,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132722
B0192932
C0156662
D0144752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6288290.461196%
B62881071.701654%
C62883325.279898%
D6288210.333969%

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 7613 6289 0 0 0.00% 0.00%
B 7613 6289 1 1 0.01% 0.02%
C 7613 6289 225 225 2.96% 3.58%
D 7613 6289 6 6 0.08% 0.10%

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 13 254 9868 53.14 852 838 169.9
A 3 137 8283 43.81 852 838 169.9
A 0 226 7065 36.64 852 838 169.9
B 6 159 1809427 11297.91 841 822 160.1
B 0 190 36904 225.4 841 822 160.1
B 12 111 19673 117.76 841 822 160.1
C 10 22 438160 2402.3 783 791 182.1
C 0 10 362819 1988.48 783 791 182.1
C 14 238 128467 701.27 783 791 182.1
D 8 195 405390 2141.28 804 787 189.0
D 2 250 77055 403.63 804 787 189.0
D 2 234 21422 109.21 804 787 189.0

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