ASTROSAT CZTI

Data Quality Report

Orbit 30179

Creation date: 2024-06-27T20:11:54.013830
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_102T01_9000004340_30179cztM0_level2.evt modeM0/AS1A10_102T01_9000004340_30179cztM0_level2_quad_clean.evt
Size (bytes)875,986,56089,392,320
Size835.4 MB 85.3 MB
Events in quadrant A3,267,973642,656
Events in quadrant B5,068,109658,477
Events in quadrant C12,828,289419,709
Events in quadrant D4,943,892549,029

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135173
B0190272
C0423682
D0189462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6239540.865523%
B6239961.538708%
C6239460173.745793%
D62395789.264305%

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 7514 6240 3 3 0.04% 0.05%
B 7514 6240 0 0 0.00% 0.00%
C 7514 6239 3820 3820 50.84% 61.23%
D 7514 6240 328 328 4.37% 5.26%

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 10 253 23641 138.4 835 821 164.9
A 8 192 23049 134.81 835 821 164.9
A 13 254 11067 62.14 835 821 164.9
B 6 159 1793807 11258.55 835 816 159.3
B 12 111 19008 114.23 835 816 159.3
B 11 111 17156 102.6 835 816 159.3
C 3 233 10329118 74351.7 599 605 138.9
C 14 238 107439 769.06 599 605 138.9
C 14 254 20966 146.57 599 605 138.9
D 1 52 1103087 5654.03 751 735 195.0
D 8 195 407838 2088.05 751 735 195.0
D 13 104 399186 2043.68 751 735 195.0

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