ASTROSAT CZTI

Data Quality Report

Orbit 41122

Creation date: 2024-06-27T22:24:44.865418
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/AS1A12_052T04_9000005602_41122cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41122cztM0_level2_quad_clean.evt
Size (bytes)333,034,56092,070,720
Size317.6 MB 87.8 MB
Events in quadrant A2,878,623621,239
Events in quadrant B3,524,800605,184
Events in quadrant C2,793,609604,061
Events in quadrant D2,687,717559,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120122
B0145061
C0118371
D0122171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5683100.175963%
B56833265.736407%
C5683180.316734%
D5683621.090973%

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 7115 5684 1 1 0.01% 0.02%
B 7115 5683 229 229 3.22% 4.03%
C 7115 5684 11 11 0.15% 0.19%
D 7115 5684 42 42 0.59% 0.74%

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 445856 3474.62 625 611 128.1
A 13 254 9128 66.47 625 611 128.1
A 2 79 7608 54.6 625 611 128.1
B 0 245 1028063 8688.0 602 584 118.3
B 0 186 64280 538.59 602 584 118.3
B 0 190 47990 400.85 602 584 118.3
C 15 214 239927 1669.22 612 617 143.4
C 14 254 116085 805.41 612 617 143.4
C 0 10 39780 273.17 612 617 143.4
D 2 249 144486 958.46 613 596 150.1
D 13 249 110791 734.02 613 596 150.1
D 5 32 30241 197.47 613 596 150.1

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