ASTROSAT CZTI

Data Quality Report

Orbit 17869

Creation date: 2024-06-27T17:41:52.446761
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/AS1A05_085T01_9000002658_17869cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17869cztM0_level2_quad_clean.evt
Size (bytes)615,553,920105,192,000
Size587.0 MB 100.3 MB
Events in quadrant A4,556,116650,070
Events in quadrant B4,247,055655,023
Events in quadrant C4,299,667635,575
Events in quadrant D4,930,204621,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195012
B0185162
C0185932
D0207612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89712072.307435%
B89712342.608405%
C89722512.797593%
D89723914.358003%

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 9726 8972 0 0 0.00% 0.00%
B 9726 8971 0 0 0.00% 0.00%
C 9727 8972 0 0 0.00% 0.00%
D 9727 8974 172 172 1.77% 1.92%

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 6 16 386133 1744.04 1083 1056 220.8
A 15 174 9580 38.6 1083 1056 220.8
A 0 226 9472 38.11 1083 1056 220.8
B 12 111 26430 119.9 1082 1053 211.7
B 11 111 22869 103.07 1082 1053 211.7
B 14 111 19694 88.07 1082 1053 211.7
C 14 238 158241 635.67 1047 1052 247.3
C 5 218 27643 107.53 1047 1052 247.3
C 7 220 14452 54.19 1047 1052 247.3
D 7 238 740218 2847.31 1054 1022 259.6
D 12 110 78448 298.24 1054 1022 259.6
D 2 152 51883 195.91 1054 1022 259.6

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