ASTROSAT CZTI

Data Quality Report

Orbit 11338

Creation date: 2024-06-27T16:11:31.109250
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/AS1G08_062T01_9000001660_11338cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11338cztM0_level2_quad_clean.evt
Size (bytes)775,912,32089,691,840
Size740.0 MB 85.5 MB
Events in quadrant A5,254,354544,775
Events in quadrant B5,980,039526,161
Events in quadrant C3,956,865555,912
Events in quadrant D7,735,925502,002

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210844
B0234043
C0176773
D0287053

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84414154.916479%
B84418389.927734%
C84412062.440469%
D8441127915.152233%

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 8696 8446 42 42 0.48% 0.50%
B 8696 8446 268 268 3.08% 3.17%
C 8696 8446 0 0 0.00% 0.00%
D 8696 8446 890 890 10.23% 10.54%

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 13 251 815468 3863.3 1019 994 210.8
A 15 174 308204 1457.19 1019 994 210.8
A 8 15 82229 385.32 1019 994 210.8
B 4 239 1430670 7391.97 1003 978 193.4
B 3 64 354387 1827.24 1003 978 193.4
B 11 51 112938 578.87 1003 978 193.4
C 14 234 9260 34.81 1013 1018 236.7
C 13 61 7475 27.27 1013 1018 236.7
C 3 202 2393 5.81 1013 1018 236.7
D 10 253 1783834 7972.23 929 901 223.6
D 2 14 775034 3461.47 929 901 223.6
D 14 34 522140 2330.67 929 901 223.6

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