ASTROSAT CZTI

Data Quality Report

Orbit 19835

Creation date: 2024-06-27T18:07:42.639805
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_118T01_9000002962_19835cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19835cztM0_level2_quad_clean.evt
Size (bytes)30,260,1606,082,560
Size28.9 MB 5.8 MB
Events in quadrant A161,11130,209
Events in quadrant B299,01757,741
Events in quadrant C296,72237,707
Events in quadrant D118,45111,920

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013994723294298446
B0-1-1
C0-1-1
D0-1-1

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B050
C020
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220211518
B0101538852
C0101518840
D01265512168

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34310.291545%
B65120.307220%
C65640.609756%
D24410.409836%

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 19972 683 0 0 0.00% 0.00%
B 20097 1299 0 0 0.00% 0.00%
C 19995 1310 0 0 0.00% 0.00%
D 20097 484 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 14 238 8193 804.73 39 38 10.1
A 5 16 1615 155.62 39 38 10.1
A 3 1 473 42.93 39 38 10.1
B 0 229 3023 175.14 75 73 16.8
B 12 111 1768 100.63 75 73 16.8
B 11 111 1611 91.31 75 73 16.8
C 14 238 11206 594.9 72 73 18.7
C 9 221 948 46.76 72 73 18.7
C 13 61 500 22.82 72 73 18.7
D 1 52 8297 951.95 28 26 8.7
D 7 238 2068 235.02 28 26 8.7
D 2 234 1222 137.65 28 26 8.7

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