ASTROSAT CZTI

Data Quality Report

Orbit 08892

Creation date: 2024-06-27T15:38:39.465908
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/AS1A03_092T01_9000001240_08892cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08892cztM0_level2_quad_clean.evt
Size (bytes)601,853,760117,812,160
Size574.0 MB 112.4 MB
Events in quadrant A4,724,974762,038
Events in quadrant B3,981,693771,203
Events in quadrant C3,630,665746,790
Events in quadrant D5,334,504718,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194223
B0173272
C0167982
D0211702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81911101.342937%
B8191821.001099%
C8191340.415090%
D81912493.039922%

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 8741 8193 21 21 0.24% 0.26%
B 8741 8194 3 3 0.03% 0.04%
C 8741 8194 0 0 0.00% 0.00%
D 8741 8194 130 130 1.49% 1.59%

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 8 5 888723 4455.78 971 951 199.2
A 13 164 29089 141.23 971 951 199.2
A 15 174 24857 119.99 971 951 199.2
B 0 214 48482 253.39 975 950 187.6
B 6 51 43922 229.08 975 950 187.6
B 10 16 40809 212.48 975 950 187.6
C 13 61 7426 30.19 927 929 215.2
C 1 176 3715 12.94 927 929 215.2
C 12 4 3365 11.32 927 929 215.2
D 8 195 833640 3375.12 918 895 246.7
D 7 71 406894 1645.52 918 895 246.7
D 1 52 280959 1135.1 918 895 246.7

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