ASTROSAT CZTI

Data Quality Report

Orbit 30906

Creation date: 2024-06-27T20:21:01.548016
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/AS1C06_004T01_9000004466_30906cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30906cztM0_level2_quad_clean.evt
Size (bytes)614,165,760102,018,240
Size585.7 MB 97.3 MB
Events in quadrant A3,207,410674,459
Events in quadrant B6,197,047675,346
Events in quadrant C3,667,232634,286
Events in quadrant D5,076,557640,056

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139282
B0229302
C0152182
D0194142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6674260.389571%
B66742353.521127%
C66745057.566677%
D66745157.716512%

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 7814 6675 2 2 0.03% 0.03%
B 7814 6674 108 108 1.38% 1.62%
C 7814 6675 34 34 0.44% 0.51%
D 7814 6674 413 413 5.29% 6.19%

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 13 55049 333.83 816 802 162.5
A 13 254 12034 69.12 816 802 162.5
A 3 137 7780 42.94 816 802 162.5
B 6 159 1963058 12914.38 812 792 151.9
B 6 36 680993 4476.65 812 792 151.9
B 0 190 148246 970.45 812 792 151.9
C 14 238 247522 1397.26 764 770 176.6
C 0 10 177028 998.08 764 770 176.6
C 14 254 170940 963.61 764 770 176.6
D 2 250 1065810 5968.36 760 741 178.5
D 8 195 704858 3945.68 760 741 178.5
D 12 218 130618 727.8 760 741 178.5

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