ASTROSAT CZTI

Data Quality Report

Orbit 17798

Creation date: 2024-06-27T17:41:01.609885
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/AS1A05_015T01_9000002650_17798cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17798cztM0_level2_quad_clean.evt
Size (bytes)470,646,72073,670,400
Size448.8 MB 70.3 MB
Events in quadrant A3,196,666447,413
Events in quadrant B3,354,086450,573
Events in quadrant C3,445,114435,348
Events in quadrant D3,800,838428,652

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139112
B0143303
C0146322
D0158932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6720480.714286%
B6719590.878107%
C6719861.279952%
D67191632.425956%

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 7665 6721 0 0 0.00% 0.00%
B 7664 6720 7 7 0.09% 0.10%
C 7664 6719 0 0 0.00% 0.00%
D 7664 6720 97 97 1.27% 1.44%

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 15 174 21440 123.73 825 807 166.8
A 0 226 7186 38.25 825 807 166.8
A 3 137 6173 32.18 825 807 166.8
B 7 220 35366 217.12 826 804 159.2
B 0 219 32834 201.21 826 804 159.2
B 12 111 18348 110.21 826 804 159.2
C 3 233 178104 954.61 793 799 185.7
C 14 238 121859 651.79 793 799 185.7
C 5 218 46488 245.99 793 799 185.7
D 7 238 314417 1627.63 798 779 192.7
D 5 222 188915 976.34 798 779 192.7
D 12 233 180340 931.84 798 779 192.7

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