ASTROSAT CZTI

Data Quality Report

Orbit 47368

Creation date: 2024-07-02T08:55:55.914740
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/AS1A13_093T25_9000006324_47368cztM0_level2.fits modeM0/AS1A13_093T25_9000006324_47368cztM0_level2_quad_clean.evt
Size (bytes)1,768,083,840283,380,480
Size1.6 GB 270.3 MB
Events in quadrant A19,574,3641,966,455
Events in quadrant B12,507,6912,013,608
Events in quadrant C9,982,8071,953,618
Events in quadrant D21,925,7731,343,655

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0728584
B04969411
C0430487
D07849816

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03840
D03840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189119975.272064%
B189089294.913264%
C189093832.025491%
D18908508726.903956%

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 20576 18912 80 80 0.39% 0.42%
B 20575 18912 317 317 1.54% 1.68%
C 20576 18912 77 77 0.37% 0.41%
D 20576 18910 4479 4479 21.77% 23.69%

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 10 83 9837668 21854.66 2161 2113 450.0
A 9 191 1198903 2659.27 2161 2113 450.0
A 9 240 96837 210.48 2161 2113 450.0
B 14 167 1992655 4705.57 2140 2070 423.0
B 0 200 1224559 2889.86 2140 2070 423.0
B 0 190 187869 439.21 2140 2070 423.0
C 0 207 1262699 2522.53 2125 2133 499.7
C 1 3 159267 314.44 2125 2133 499.7
C 3 233 144167 284.23 2125 2133 499.7
D 2 165 13621328 28731.35 1874 1816 474.0
D 2 249 610349 1283.74 1874 1816 474.0
D 12 2 150502 313.66 1874 1816 474.0

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