ASTROSAT CZTI

Data Quality Report

Orbit 37825

Creation date: 2024-06-27T21:44:57.450776
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/AS1T05_054T01_9000005350_37825cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37825cztM0_level2_quad_clean.evt
Size (bytes)427,904,64091,359,360
Size408.1 MB 87.1 MB
Events in quadrant A2,830,600622,360
Events in quadrant B3,416,227610,654
Events in quadrant C2,701,154608,418
Events in quadrant D3,667,959570,832

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114062
B0134951
C0109601
D0142651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5053120.237483%
B50531092.157134%
C5053330.653077%
D50532675.283990%

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 7176 5054 3 3 0.04% 0.06%
B 7176 5054 77 77 1.07% 1.52%
C 7175 5053 31 31 0.43% 0.61%
D 7175 5053 260 260 3.62% 5.15%

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 314617 2473.84 633 624 126.9
A 13 6 28659 220.88 633 624 126.9
A 12 189 16238 123.02 633 624 126.9
B 5 172 328185 2828.27 615 602 115.8
B 4 171 240402 2070.37 615 602 115.8
B 0 229 146446 1259.18 615 602 115.8
C 15 214 216071 1584.46 596 602 136.0
C 0 10 110653 809.27 596 602 136.0
C 14 254 28853 207.75 596 602 136.0
D 12 233 373648 2573.94 598 584 144.9
D 12 218 250816 1726.46 598 584 144.9
D 2 249 159724 1097.98 598 584 144.9

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