ASTROSAT CZTI

Data Quality Report

Orbit 35067

Creation date: 2022-03-24T14:05:13.569430
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/AS1A11_046T08_9000005024_35067cztM0_level2.evt modeM0/AS1A11_046T08_9000005024_35067cztM0_level2_quad_clean.evt
Size (bytes)754,793,280160,266,240
Size719.8 MB 152.8 MB
Events in quadrant A4,026,5701,071,787
Events in quadrant B5,101,4371,074,449
Events in quadrant C4,349,5301,100,865
Events in quadrant D8,782,908992,377

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180032
B0212592
C0183682
D0324202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8852160.180750%
B88523604.066878%
C8852270.305016%
D88525396.089019%

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 10194 8853 4 4 0.04% 0.05%
B 10194 8853 236 236 2.32% 2.67%
C 10194 8853 17 17 0.17% 0.19%
D 10194 8853 448 448 4.39% 5.06%

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 10 83 99309 488.69 998 979 201.2
A 9 143 34614 167.16 998 979 201.2
A 13 254 15621 72.77 998 979 201.2
B 5 172 1081819 5787.48 979 953 186.8
B 4 232 54855 288.62 979 953 186.8
B 15 85 34196 178.0 979 953 186.8
C 15 214 367551 1626.24 978 985 225.4
C 0 10 112934 496.65 978 985 225.4
C 14 67 27527 117.75 978 985 225.4
D 8 195 3445007 15053.44 953 927 228.8
D 1 47 633393 2764.39 953 927 228.8
D 2 250 225700 982.44 953 927 228.8

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