ASTROSAT CZTI

Data Quality Report

Orbit 24858

Creation date: 2024-06-27T19:10:53.221572
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/AS1A08_003T08_9000003638_24858cztM0_level2.evt modeM0/AS1A08_003T08_9000003638_24858cztM0_level2_quad_clean.evt
Size (bytes)639,630,72093,139,200
Size610.0 MB 88.8 MB
Events in quadrant A4,016,629599,303
Events in quadrant B3,839,897609,830
Events in quadrant C3,852,793572,240
Events in quadrant D7,138,449501,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168082
B0161542
C0161172
D0263292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77232383.081704%
B77242363.055412%
C77242483.210772%
D7724130116.843604%

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 7903 7724 27 27 0.34% 0.35%
B 7904 7725 0 0 0.00% 0.00%
C 7904 7725 0 0 0.00% 0.00%
D 7904 7725 1117 1117 14.13% 14.46%

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 6 16 244779 1236.44 976 953 197.2
A 13 254 11746 54.73 976 953 197.2
A 3 137 9683 44.27 976 953 197.2
B 7 202 26023 133.39 968 941 188.0
B 12 111 24009 122.68 968 941 188.0
B 11 111 22149 112.79 968 941 188.0
C 14 238 149497 673.62 932 934 220.5
C 7 247 60448 269.85 932 934 220.5
C 13 61 6546 25.45 932 934 220.5
D 1 52 3201919 14704.88 885 856 217.7
D 12 218 523510 2400.94 885 856 217.7
D 8 195 59998 271.68 885 856 217.7

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