ASTROSAT CZTI

Data Quality Report

Orbit 01327

Creation date: 2024-06-27T14:11:02.720342
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/AS1G04_002T02_9000000230_01327cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01327cztM0_level2_quad_clean.evt
Size (bytes)1,032,837,12096,154,560
Size985.0 MB 91.7 MB
Events in quadrant A7,461,502629,209
Events in quadrant B8,710,787621,298
Events in quadrant C7,552,224615,515
Events in quadrant D7,139,725608,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266582
B0302691
C0268201
D0257221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626540.063847%
B6265540.861931%
C6265140.223464%
D6265330.526736%

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 7290 6266 160 160 2.19% 2.55%
B 7290 6266 679 679 9.31% 10.84%
C 7290 6266 164 164 2.25% 2.62%
D 7290 6266 255 255 3.50% 4.07%

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 14 5 123148 267.63 1880 1892 453.1
A 15 127 61519 131.6 1880 1892 453.1
A 4 32 35219 73.56 1880 1892 453.1
B 8 4 963421 2093.36 1961 1966 459.3
B 6 53 115189 246.52 1961 1966 459.3
B 5 249 49223 102.89 1961 1966 459.3
C 15 241 312441 613.41 1821 1891 506.3
C 3 9 92316 178.61 1821 1891 506.3
C 3 111 22033 39.79 1821 1891 506.3
D 10 84 295023 536.19 1761 1823 546.8
D 1 83 153148 276.73 1761 1823 546.8
D 10 125 31519 54.31 1761 1823 546.8

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