ASTROSAT CZTI

Data Quality Report

Orbit 01854

Creation date: 2024-06-27T14:13:04.566157
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/AS1G02_021T10_9000000304_01854cztM0_level2.evt modeM0/AS1G02_021T10_9000000304_01854cztM0_level2_quad_clean.evt
Size (bytes)1,028,666,88071,645,760
Size981.0 MB 68.3 MB
Events in quadrant A7,951,298432,223
Events in quadrant B8,017,299437,429
Events in quadrant C7,474,806430,360
Events in quadrant D7,281,492418,651

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02822112
B0283932
C0268022
D0262232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6461460.711964%
B6463320.495126%
C6463230.355872%
D6463731.129506%

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 7503 6464 242 242 3.23% 3.74%
B 7503 6465 232 232 3.09% 3.59%
C 7503 6465 176 176 2.35% 2.72%
D 7503 6465 196 196 2.61% 3.03%

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 0 231 96284 189.15 2055 2069 498.1
A -1 -1 -1 -1.0 2055 2069 498.1
A -1 -1 -1 -1.0 2055 2069 498.1
B 8 3 14393 24.85 2102 2116 494.1
B 5 6 13629 23.3 2102 2116 494.1
B 5 189 12812 21.65 2102 2116 494.1
C 9 236 33927 60.47 1899 1966 528.6
C 9 54 13836 22.46 1899 1966 528.6
C 14 48 11607 18.24 1899 1966 528.6
D 10 102 202766 343.97 1882 1952 583.8
D 10 215 17985 27.46 1882 1952 583.8
D 10 172 17630 26.85 1882 1952 583.8

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