ASTROSAT CZTI

Data Quality Report

Orbit 15789

Creation date: 2024-06-27T17:13:25.293069
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/AS1A04_100T01_9000002336_15789cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15789cztM0_level2_quad_clean.evt
Size (bytes)464,794,56083,396,160
Size443.3 MB 79.5 MB
Events in quadrant A3,091,150517,999
Events in quadrant B3,925,062528,102
Events in quadrant C3,298,022526,953
Events in quadrant D3,338,681516,969

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134373
B0158722
C0140702
D0141772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6240420.673077%
B62401852.964744%
C62401011.618590%
D6240570.913462%

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 7436 6242 4 4 0.05% 0.06%
B 7436 6242 66 66 0.89% 1.06%
C 7436 6242 0 0 0.00% 0.00%
D 7436 6242 7 7 0.09% 0.11%

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 15 69 11225 64.67 798 783 161.5
A 15 239 10109 57.76 798 783 161.5
A 0 226 7362 40.75 798 783 161.5
B 10 245 251632 1691.94 799 780 148.3
B 4 251 194628 1307.46 799 780 148.3
B 7 220 144661 970.45 799 780 148.3
C 14 238 120706 659.71 782 788 181.8
C 7 247 118556 647.89 782 788 181.8
C 13 61 5529 26.08 782 788 181.8
D 1 52 162617 778.5 783 768 207.9
D 2 152 72658 345.79 783 768 207.9
D 10 40 61107 290.23 783 768 207.9

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