ASTROSAT CZTI

Data Quality Report

Orbit 32437

Creation date: 2024-06-27T20:40:10.179669
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/AS1A09_108T02_9000004706_32437cztM0_level2.evt modeM0/AS1A09_108T02_9000004706_32437cztM0_level2_quad_clean.evt
Size (bytes)636,264,00092,586,240
Size606.8 MB 88.3 MB
Events in quadrant A3,575,268602,299
Events in quadrant B6,122,962603,982
Events in quadrant C4,090,232584,352
Events in quadrant D5,047,736565,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148823
B0226192
C0163972
D0196412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64101231.918877%
B64105218.127925%
C64104456.942278%
D64101412.199688%

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 8825 6412 0 0 0.00% 0.00%
B 8825 6412 163 163 1.85% 2.54%
C 8825 6412 27 27 0.31% 0.42%
D 8825 6412 26 26 0.29% 0.41%

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 6 16278 84.74 923 909 181.4
A 13 254 10599 53.43 923 909 181.4
A 3 137 8762 43.3 923 909 181.4
B 6 159 1597562 9633.81 893 874 165.7
B 4 80 1017904 6136.38 893 874 165.7
B 12 111 19726 113.75 893 874 165.7
C 14 238 206017 1021.18 870 880 200.9
C 10 22 142508 705.03 870 880 200.9
C 0 10 108547 535.97 870 880 200.9
D 8 195 1478020 7058.76 894 873 209.3
D 2 250 62858 296.2 894 873 209.3
D 1 47 49795 233.78 894 873 209.3

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