ASTROSAT CZTI

Data Quality Report

Orbit 20161028_G06_023T01_9000000762_level2

Creation date: 2025-11-07T12:22:00.613455
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_023T01_9000000762cztM0_level2.fits modeM0/AS1G06_023T01_9000000762cztM0_level2_quad_clean.evt
Size (bytes)633,533,760721,252,800
Size604.2 MB 687.8 MB
Events in quadrant A3,853,0644,676,171
Events in quadrant B3,750,8444,697,949
Events in quadrant C3,764,8644,389,229
Events in quadrant D2,880,3563,150,113

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014600
B014600
C014600
D014600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01551810
B01540980
C01475760
D02688340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A719119431.311343%
B7191710561.468359%
C719245710.793894%
D718981344018.693149%

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 83150 71936 0 0 0.00% 0.00%
B 83150 71939 0 0 0.00% 0.00%
C 83150 71940 0 0 0.00% 0.00%
D 83149 71600 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 14 188 3868 11.54 999 935 254.3
A 0 29 3807 11.3 999 935 254.3
A 7 110 3361 9.54 999 935 254.3
B 2 9 3341 12.17 988 940 197.3
B 12 226 2699 8.92 988 940 197.3
B 14 254 2575 8.29 988 940 197.3
C 1 81 2853 7.33 994 919 263.9
C 1 80 2845 7.3 994 919 263.9
C 12 241 2780 7.05 994 919 263.9
D 11 82 2194 6.46 823 743 224.5
D 3 14 2187 6.43 823 743 224.5
D 6 231 2143 6.24 823 743 224.5

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