ASTROSAT CZTI

Data Quality Report

Orbit 00722

Creation date: 2024-06-27T14:02:03.039943
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_147T01_9000000106_00722cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00722cztM0_level2_quad_clean.evt
Size (bytes)997,505,28072,887,040
Size951.3 MB 69.5 MB
Events in quadrant A7,345,146447,171
Events in quadrant B7,683,069457,363
Events in quadrant C7,164,817445,095
Events in quadrant D7,601,124420,493

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262941
B0272821
C0257021
D0269995

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6262400.638774%
B6263230.367236%
C626370.111768%
D6262881.405302%

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 7497 6263 197 197 2.63% 3.15%
B 7498 6264 168 168 2.24% 2.68%
C 7498 6264 94 94 1.25% 1.50%
D 7497 6263 339 339 4.52% 5.41%

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 14 111 61509 134.46 1858 1873 443.5
A 10 230 51724 112.4 1858 1873 443.5
A 15 171 51538 111.98 1858 1873 443.5
B 5 191 72466 153.05 1970 1981 460.5
B 7 221 47772 99.43 1970 1981 460.5
B 0 220 30615 62.17 1970 1981 460.5
C 15 241 41108 78.21 1811 1882 501.6
C 3 111 25605 47.3 1811 1882 501.6
C 3 79 14155 24.47 1811 1882 501.6
D 6 226 418087 783.13 1733 1795 531.6
D 7 207 384533 720.01 1733 1795 531.6
D 1 4 162560 302.43 1733 1795 531.6

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