ASTROSAT CZTI

Data Quality Report

Orbit 31511

Creation date: 2024-06-27T20:29:19.858839
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_119T01_9000004590_31511cztM0_level2.evt modeM0/AS1A10_119T01_9000004590_31511cztM0_level2_quad_clean.evt
Size (bytes)744,243,84089,714,880
Size709.8 MB 85.6 MB
Events in quadrant A8,105,662456,949
Events in quadrant B5,287,676641,455
Events in quadrant C3,595,095614,786
Events in quadrant D5,130,378567,649

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283582
B0198602
C0144412
D0195284

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225237338.120482%
B62251602.570281%
C62251442.313253%
D62244957.953085%

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 7534 6224 1736 1736 23.04% 27.89%
B 7535 6226 52 52 0.69% 0.84%
C 7535 6226 63 63 0.84% 1.01%
D 7534 6224 476 476 6.32% 7.65%

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 0 13 5593661 43137.1 650 638 129.7
A 13 254 9535 68.62 650 638 129.7
A 3 137 6187 42.8 650 638 129.7
B 6 159 1747052 11308.69 817 800 154.4
B 5 172 176985 1140.97 817 800 154.4
B 4 80 53961 344.27 817 800 154.4
C 0 10 196034 1068.74 783 791 182.7
C 3 233 177065 964.9 783 791 182.7
C 14 238 128693 700.12 783 791 182.7
D 12 79 1151809 6306.65 761 741 182.5
D 8 195 479122 2621.03 761 741 182.5
D 13 249 289430 1581.71 761 741 182.5

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