ASTROSAT CZTI

Data Quality Report

Orbit 24804

Creation date: 2024-06-27T19:10:04.175597
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/AS1T03_197T01_9000003626_24804cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24804cztM0_level2_quad_clean.evt
Size (bytes)501,042,24096,272,640
Size477.8 MB 91.8 MB
Events in quadrant A3,322,699613,797
Events in quadrant B3,483,224620,431
Events in quadrant C4,055,595602,869
Events in quadrant D3,833,567587,195

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145652
B0149212
C0167302
D0163732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7057380.538472%
B7057941.332011%
C70563935.569728%
D7057540.765198%

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 8682 7059 0 0 0.00% 0.00%
B 8682 7059 20 20 0.23% 0.28%
C 8681 7058 148 148 1.70% 2.10%
D 8682 7059 28 28 0.32% 0.40%

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 11562 61.74 860 841 173.7
A 3 137 8020 41.34 860 841 173.7
A 0 226 7234 36.81 860 841 173.7
B 3 64 60898 361.63 856 833 166.1
B 7 202 37633 221.56 856 833 166.1
B 12 111 20547 118.69 856 833 166.1
C 2 16 768888 4036.94 810 813 190.3
C 14 238 128795 672.66 810 813 190.3
C 13 61 5571 25.01 810 813 190.3
D 8 195 421444 2073.44 837 811 202.9
D 1 52 210815 1035.18 837 811 202.9
D 2 234 25929 123.81 837 811 202.9

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