ASTROSAT CZTI

Data Quality Report

Orbit 20170318_G06_077T01_9000001090_level2

Creation date: 2025-11-10T04:25:14.931819
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/AS1G06_077T01_9000001090cztM0_level2.fits modeM0/AS1G06_077T01_9000001090cztM0_level2_quad_clean.evt
Size (bytes)1,402,174,0801,372,273,920
Size1.3 GB 1.3 GB
Events in quadrant A8,202,2047,705,216
Events in quadrant B8,340,6968,385,853
Events in quadrant C8,327,6727,884,156
Events in quadrant D7,134,9427,138,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031040
B030980
C031080
D031040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03812240
B03208450
C03730150
D04022100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02310
B02310
C02310
D02310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152498104926.880090%
B15247327721.818027%
C15249970654.632817%
D152465109837.203621%

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 175897 151826 0 0 0.00% 0.00%
B 175898 152759 0 0 0.00% 0.00%
C 175898 152557 0 0 0.00% 0.00%
D 175898 152529 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 0 29 7917 10.98 2132 1981 540.6
A 7 110 6761 8.84 2132 1981 540.6
A 0 30 6365 8.11 2132 1981 540.6
B 2 9 7223 11.73 2197 2081 438.4
B 3 17 5686 8.22 2197 2081 438.4
B 12 226 5631 8.1 2197 2081 438.4
C 1 80 6125 7.07 2200 2031 578.8
C 1 81 6057 6.96 2200 2031 578.8
C 12 241 6034 6.92 2200 2031 578.8
D 3 14 5463 6.61 2033 1839 548.6
D 6 231 5245 6.21 2033 1839 548.6
D 7 5 5095 5.93 2033 1839 548.6

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