ASTROSAT CZTI

Data Quality Report

Orbit 40937

Creation date: 2024-06-27T22:22:26.644160
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_9000005582_40937cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40937cztM0_level2_quad_clean.evt
Size (bytes)343,172,16091,707,840
Size327.3 MB 87.5 MB
Events in quadrant A2,873,803629,090
Events in quadrant B2,414,217640,457
Events in quadrant C3,246,429592,436
Events in quadrant D3,755,266542,866

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117323
B0108292
C0130192
D0148062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5308130.244913%
B5308110.207234%
C53081362.562170%
D53082705.086662%

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 7250 5309 3 3 0.04% 0.06%
B 7250 5309 4 4 0.06% 0.08%
C 7250 5309 124 124 1.71% 2.34%
D 7250 5309 246 246 3.39% 4.63%

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 509798 4159.18 602 590 122.4
A 2 79 19769 156.65 602 590 122.4
A 7 3 11607 89.99 602 590 122.4
B 5 255 76836 660.86 594 577 115.4
B 12 111 13908 115.53 594 577 115.4
B 11 111 13123 108.72 594 577 115.4
C 14 254 585227 4438.69 571 575 131.7
C 15 214 244887 1854.82 571 575 131.7
C 0 10 177745 1345.08 571 575 131.7
D 13 249 405379 2887.91 570 553 140.2
D 13 171 329472 2346.41 570 553 140.2
D 12 233 291762 2077.4 570 553 140.2

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