ASTROSAT CZTI

Data Quality Report

Orbit 01098

Creation date: 2024-06-27T14:07:26.078591
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/AS1P01_997T02_9000000212_01098cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01098cztM0_level2_quad_clean.evt
Size (bytes)977,166,72097,773,120
Size931.9 MB 93.2 MB
Events in quadrant A7,282,099646,656
Events in quadrant B7,560,027653,086
Events in quadrant C7,323,787618,409
Events in quadrant D7,017,615611,860

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260032
B0268581
C0261671
D0252861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6180420.679612%
B6180460.744337%
C6180470.760518%
D61801382.233010%

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 7340 6180 152 152 2.07% 2.46%
B 7340 6180 181 181 2.47% 2.93%
C 7340 6180 188 188 2.56% 3.04%
D 7340 6180 313 313 4.26% 5.06%

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 4 32 11933 22.29 1891 1906 449.9
A 13 9 8504 14.66 1891 1906 449.9
A 11 79 7588 12.63 1891 1906 449.9
B 0 190 28011 55.82 1967 1976 466.4
B 5 249 24006 47.23 1967 1976 466.4
B 15 85 18099 34.57 1967 1976 466.4
C 15 241 290598 593.78 1753 1808 486.4
C 10 5 95832 193.32 1753 1808 486.4
C 10 207 53039 105.33 1753 1808 486.4
D 10 125 84956 153.66 1787 1801 541.1
D 2 216 57144 102.27 1787 1801 541.1
D 2 14 11626 18.16 1787 1801 541.1

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