ASTROSAT CZTI

Data Quality Report

Orbit 34358

Creation date: 2022-02-04T15:48:54.651550
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/AS1A05_019T01_9000004906_34358cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34358cztM0_level2_quad_clean.evt
Size (bytes)1,874,917,440206,392,320
Size1.7 GB 196.8 MB
Events in quadrant A7,223,1541,453,035
Events in quadrant B9,074,7051,448,528
Events in quadrant C8,655,0011,435,863
Events in quadrant D30,773,347827,405

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317395
B0369874
C0348074
D01020534

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15692260.165690%
B156923422.179454%
C156921500.955901%
D15692924858.934489%

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 19872 15695 4 4 0.02% 0.03%
B 19872 15695 235 235 1.18% 1.50%
C 19872 15695 122 122 0.61% 0.78%
D 19872 15694 8728 8728 43.92% 55.61%

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 68875 182.93 1831 1790 366.7
A 9 143 46024 120.62 1831 1790 366.7
A 13 6 38493 100.08 1831 1790 366.7
B 5 172 1059866 3060.72 1804 1757 345.7
B 0 190 463623 1336.01 1804 1757 345.7
B 0 245 91186 258.68 1804 1757 345.7
C 15 214 652140 1579.22 1773 1786 411.8
C 14 254 619300 1499.47 1773 1786 411.8
C 3 233 179949 432.62 1773 1786 411.8
D 7 223 22009831 68795.91 1312 1275 319.9
D 8 195 2189821 6841.11 1312 1275 319.9
D 2 250 314054 977.71 1312 1275 319.9

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