ASTROSAT CZTI

Data Quality Report

Orbit 31906

Creation date: 2024-06-27T20:34:04.064621
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/AS1A10_123T09_9000004654_31906cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31906cztM0_level2_quad_clean.evt
Size (bytes)1,057,694,40084,041,280
Size1008.7 MB 80.1 MB
Events in quadrant A3,135,788644,708
Events in quadrant B11,501,321454,008
Events in quadrant C3,935,146598,644
Events in quadrant D13,021,657390,127

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134521
B0387731
C0158281
D0431591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6520661.012270%
B6520362955.659509%
C65212764.232480%
D6521384959.024689%

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 7295 6521 0 0 0.00% 0.00%
B 7295 6521 3282 3282 44.99% 50.33%
C 7296 6522 29 29 0.40% 0.44%
D 7296 6522 3813 3813 52.26% 58.46%

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 13 254 12242 70.81 809 794 161.7
A 13 6 9957 56.67 809 794 161.7
A 3 137 7874 43.79 809 794 161.7
B 4 80 6109079 58708.65 561 547 104.0
B 6 159 1492017 14334.41 561 547 104.0
B 5 172 1154229 11087.95 561 547 104.0
C 3 233 393878 2178.88 771 776 180.4
C 0 10 334482 1849.66 771 776 180.4
C 14 238 140217 772.89 771 776 180.4
D 12 33 8844437 62400.7 593 578 141.7
D 8 195 872620 6152.97 593 578 141.7
D 7 38 276035 1943.58 593 578 141.7

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