ASTROSAT CZTI

Data Quality Report

Orbit 13702

Creation date: 2024-06-27T16:44:51.228081
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/AS1T02_040T01_9000002030_13702cztM0_level2.evt modeM0/AS1T02_040T01_9000002030_13702cztM0_level2_quad_clean.evt
Size (bytes)469,972,800102,110,400
Size448.2 MB 97.4 MB
Events in quadrant A3,179,723666,471
Events in quadrant B3,563,511716,416
Events in quadrant C3,242,943645,459
Events in quadrant D3,797,791602,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136623
B0148072
C0136112
D0157262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6615260.393046%
B6615861.300076%
C6615230.347695%
D66151101.662887%

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 7616 6617 5 5 0.07% 0.08%
B 7616 6617 12 12 0.16% 0.18%
C 7616 6617 0 0 0.00% 0.00%
D 7616 6617 82 82 1.08% 1.24%

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 15 69 27115 157.09 817 799 167.5
A 0 226 7172 38.04 817 799 167.5
A 1 162 6841 36.07 817 799 167.5
B 0 219 157616 981.29 833 816 159.8
B 0 189 52295 322.17 833 816 159.8
B 8 250 46754 287.49 833 816 159.8
C 3 233 144532 779.46 793 799 184.4
C 13 61 5651 26.31 793 799 184.4
C 14 234 4071 17.74 793 799 184.4
D 5 222 315897 1538.62 767 754 204.8
D 13 122 276437 1345.96 767 754 204.8
D 1 52 77516 374.77 767 754 204.8

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