ASTROSAT CZTI

Data Quality Report

Orbit 14731

Creation date: 2024-06-27T16:59:12.685116
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/AS1G08_081T01_9000002178_14731cztM0_level2.evt modeM0/AS1G08_081T01_9000002178_14731cztM0_level2_quad_clean.evt
Size (bytes)470,208,96069,439,680
Size448.4 MB 66.2 MB
Events in quadrant A3,584,501419,171
Events in quadrant B3,537,303415,473
Events in quadrant C3,405,762402,411
Events in quadrant D3,265,420406,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146773
B0145482
C0139322
D0137862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6586971.472821%
B6586931.412086%
C6586620.941391%
D6586620.941391%

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 7732 6587 1 1 0.01% 0.02%
B 7732 6587 4 4 0.05% 0.06%
C 7732 6587 0 0 0.00% 0.00%
D 7732 6587 0 0 0.00% 0.00%

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 8 15 188082 1061.07 869 851 176.5
A 12 189 47921 266.75 869 851 176.5
A 0 226 7689 38.75 869 851 176.5
B 0 205 56912 345.22 855 834 162.4
B 0 230 51422 311.42 855 834 162.4
B 10 249 29883 178.82 855 834 162.4
C 3 233 173190 911.71 825 831 189.1
C 4 254 9259 44.58 825 831 189.1
C 13 61 5746 26.0 825 831 189.1
D 12 16 54340 270.75 837 818 197.7
D 2 234 21799 106.13 837 818 197.7
D 2 152 19027 92.11 837 818 197.7

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