ASTROSAT CZTI

Data Quality Report

Orbit 31550

Creation date: 2024-06-27T20:29:50.884556
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_056T01_9000004598_31550cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31550cztM0_level2_quad_clean.evt
Size (bytes)605,859,84094,115,520
Size577.8 MB 89.8 MB
Events in quadrant A3,472,600601,900
Events in quadrant B5,790,021599,887
Events in quadrant C3,580,778573,973
Events in quadrant D5,014,065569,374

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150322
B0223662
C0152352
D0198012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72501191.641379%
B72511902.620328%
C72511802.482416%
D72511612.220383%

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 8830 7250 0 0 0.00% 0.00%
B 8831 7251 8 8 0.09% 0.11%
C 8831 7251 3 3 0.03% 0.04%
D 8831 7251 47 47 0.53% 0.65%

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 12399 63.89 897 880 180.3
A 3 137 9234 46.33 897 880 180.3
A 0 13 7834 38.57 897 880 180.3
B 6 159 2029152 11903.12 884 862 170.4
B 4 80 121081 705.51 884 862 170.4
B 0 155 50564 291.68 884 862 170.4
C 14 238 137880 681.4 854 856 201.1
C 0 10 36021 174.87 854 856 201.1
C 4 175 29964 144.75 854 856 201.1
D 8 195 1357472 6477.29 868 843 209.4
D 2 250 107530 509.38 868 843 209.4
D 7 223 89870 425.06 868 843 209.4

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