ASTROSAT CZTI

Data Quality Report

Orbit 43695

Creation date: 2024-06-27T22:54:40.028680
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_008T02_9000005900_43695cztM0_level2.fits modeM0/AS1A13_008T02_9000005900_43695cztM0_level2_quad_clean.evt
Size (bytes)496,532,16083,093,760
Size473.5 MB 79.2 MB
Events in quadrant A6,856,962548,372
Events in quadrant B3,130,939574,681
Events in quadrant C3,103,440556,018
Events in quadrant D4,897,217481,676

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239593
B0126272
C0125742
D0180152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504584416.729435%
B50452545.034688%
C50451773.508424%
D504588917.621407%

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 5140 5047 129 129 2.51% 2.56%
B 5140 5047 85 85 1.65% 1.68%
C 5140 5047 78 78 1.52% 1.55%
D 5140 5047 319 319 6.21% 6.32%

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 15 222 3258726 26240.61 591 579 124.2
A 10 83 556369 4476.25 591 579 124.2
A 15 223 511448 4114.46 591 579 124.2
B 4 171 426244 3500.27 607 588 121.6
B 5 235 143168 1172.47 607 588 121.6
B 4 206 85384 697.3 607 588 121.6
C 15 157 464629 3271.81 596 599 141.8
C 3 233 130512 916.0 596 599 141.8
C 15 174 107596 754.42 596 599 141.8
D 1 20 710690 4449.1 564 550 159.6
D 13 249 303684 1899.17 564 550 159.6
D 5 235 259434 1621.94 564 550 159.6

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