ASTROSAT CZTI

Data Quality Report

Orbit 39942

Creation date: 2024-06-27T22:10:24.206671
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_044T21_9000005512_39942cztM0_level2.fits modeM0/AS1A12_044T21_9000005512_39942cztM0_level2_quad_clean.evt
Size (bytes)436,262,40087,278,400
Size416.1 MB 83.2 MB
Events in quadrant A3,001,812610,004
Events in quadrant B3,160,309605,171
Events in quadrant C6,131,697527,023
Events in quadrant D3,431,510519,016

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122193
B0130092
C0220052
D0139822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5453200.366771%
B54531873.429305%
C545378314.359068%
D54532735.006418%

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 7306 5454 19 19 0.26% 0.35%
B 7306 5454 153 153 2.09% 2.81%
C 7306 5454 566 566 7.75% 10.38%
D 7306 5453 264 264 3.61% 4.84%

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 486778 3921.64 607 596 124.0
A 13 248 70737 565.77 607 596 124.0
A 2 79 52800 421.09 607 596 124.0
B 5 255 491579 4244.1 596 579 115.7
B 0 183 91049 782.0 596 579 115.7
B 4 170 86348 741.37 596 579 115.7
C 9 54 3645033 27788.25 564 569 131.2
C 15 214 221336 1683.3 564 569 131.2
C 0 10 22569 167.75 564 569 131.2
D 2 249 512743 3516.48 581 563 145.7
D 2 250 283824 1944.79 581 563 145.7
D 12 227 106942 730.37 581 563 145.7

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