ASTROSAT CZTI

Data Quality Report

Orbit 27820

Creation date: 2024-06-27T19:44:49.715589
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_048T08_9000004020_27820cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27820cztM0_level2_quad_clean.evt
Size (bytes)483,298,560104,112,000
Size460.9 MB 99.3 MB
Events in quadrant A3,370,965705,035
Events in quadrant B3,499,143710,551
Events in quadrant C3,613,541657,492
Events in quadrant D3,723,312638,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140220
B0143460
C0149150
D0152090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6333681.073741%
B6333891.405337%
C63331412.226433%
D63341422.241869%

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 7628 6333 0 0 0.00% 0.00%
B 7628 6333 11 11 0.14% 0.17%
C 7628 6333 5 5 0.07% 0.08%
D 7629 6334 94 94 1.23% 1.48%

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 2 79 38202 218.2 862 849 171.2
A 13 254 10394 55.76 862 849 171.2
A 3 137 7708 40.07 862 849 171.2
B 5 172 37980 233.27 851 835 159.2
B 15 32 36444 223.62 851 835 159.2
B 15 33 32353 197.93 851 835 159.2
C 3 233 347974 1863.09 802 808 186.3
C 14 238 131375 700.7 802 808 186.3
C 4 175 6571 30.93 802 808 186.3
D 1 52 265680 1364.9 812 791 194.1
D 2 250 241595 1240.8 812 791 194.1
D 12 79 43619 220.68 812 791 194.1

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