ASTROSAT CZTI

Data Quality Report

Orbit 36874

Creation date: 2024-06-27T21:32:39.854425
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/AS1A11_075T01_9000005244_36874cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36874cztM0_level2_quad_clean.evt
Size (bytes)364,538,88059,463,360
Size347.7 MB 56.7 MB
Events in quadrant A2,845,721459,913
Events in quadrant B902,4177,378
Events in quadrant C2,818,453471,831
Events in quadrant D4,064,888446,093

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123306
B060182
C01218320
D0165703

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5916180.304260%
B59185918100.000000%
C5907230.389369%
D59172363.988508%

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 7231 5918 10 10 0.14% 0.17%
B 7230 5917 0 0 0.00% 0.00%
C 7231 5915 15 15 0.21% 0.25%
D 7231 5919 190 190 2.63% 3.21%

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 242499 1880.81 642 630 128.6
A 9 143 68640 528.85 642 630 128.6
A 13 6 17057 127.74 642 630 128.6
B 12 243 820804 195449.19 12 12 4.2
B 12 144 15385 3660.66 12 12 4.2
B 4 81 3747 889.39 12 12 4.2
C 15 214 253552 1718.98 627 630 147.1
C 0 10 77936 525.41 627 630 147.1
C 3 233 23620 156.25 627 630 147.1
D 12 227 757697 5055.54 615 599 149.8
D 12 233 331660 2210.67 615 599 149.8
D 13 249 250456 1668.43 615 599 149.8

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