ASTROSAT CZTI

Data Quality Report

Orbit 31309

Creation date: 2024-06-27T20:26:29.048314
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/AS1A10_058T08_9000004532_31309cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31309cztM0_level2_quad_clean.evt
Size (bytes)1,354,380,480210,634,560
Size1.3 GB 200.9 MB
Events in quadrant A8,400,7901,374,024
Events in quadrant B12,942,9791,354,868
Events in quadrant C9,265,7281,276,665
Events in quadrant D9,335,5241,275,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341633
B0492923
C0374593
D0376523

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159171380.866998%
B159173212.016712%
C159173712.330841%
D159172091.313062%

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 19703 15920 0 0 0.00% 0.00%
B 19703 15920 15 15 0.08% 0.09%
C 19703 15920 60 60 0.30% 0.38%
D 19703 15920 95 95 0.48% 0.60%

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 13 254 27795 60.29 2178 2144 425.5
A 3 137 20767 43.77 2178 2144 425.5
A 0 226 18438 38.29 2178 2144 425.5
B 6 159 4165734 10524.74 2115 2067 395.6
B 4 80 275233 690.5 2115 2067 395.6
B 15 33 99868 247.22 2115 2067 395.6
C 3 233 855427 1825.38 2021 2040 467.5
C 14 238 335872 714.06 2021 2040 467.5
C 0 10 151546 319.79 2021 2040 467.5
D 8 195 1169778 2247.67 2061 2022 519.5
D 1 52 306549 586.15 2061 2022 519.5
D 2 234 55647 103.22 2061 2022 519.5

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