ASTROSAT CZTI

Data Quality Report

Orbit 00717

Creation date: 2024-06-27T14:01:59.698266
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_00717cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00717cztM0_level2_quad_clean.evt
Size (bytes)980,694,72065,862,720
Size935.3 MB 62.8 MB
Events in quadrant A7,112,905401,248
Events in quadrant B7,453,332401,054
Events in quadrant C7,040,900391,459
Events in quadrant D7,690,473376,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254451
B0264261
C0252445
D0271671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6078150.246792%
B6078150.246792%
C6077140.230377%
D6077851.398716%

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 6808 6079 212 212 3.11% 3.49%
B 6808 6079 217 217 3.19% 3.57%
C 6807 6078 129 129 1.90% 2.12%
D 6807 6078 481 481 7.07% 7.91%

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 15 171 85589 190.78 1830 1841 439.0
A 12 189 7671 13.28 1830 1841 439.0
A 11 79 6865 11.44 1830 1841 439.0
B 0 220 41011 87.1 1905 1915 448.8
B 5 249 39289 83.27 1905 1915 448.8
B 0 207 35443 74.7 1905 1915 448.8
C 15 241 124297 250.5 1750 1818 488.9
C 3 111 37158 72.28 1750 1818 488.9
C 3 79 27396 52.31 1750 1818 488.9
D 9 52 592806 1114.89 1709 1774 530.1
D 12 33 296384 555.74 1709 1774 530.1
D 6 226 175451 327.61 1709 1774 530.1

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