ASTROSAT CZTI

Data Quality Report

Orbit 41507

Creation date: 2024-06-27T22:29:54.790426
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_035T02_9000005676_41507cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41507cztM0_level2_quad_clean.evt
Size (bytes)316,647,36088,876,800
Size302.0 MB 84.8 MB
Events in quadrant A2,966,871595,411
Events in quadrant B2,547,800611,085
Events in quadrant C3,083,932564,351
Events in quadrant D2,701,356541,572

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121883
B0114542
C0125412
D0118822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5404170.314582%
B5404190.351591%
C54042224.108068%
D5404420.777202%

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 7077 5405 9 9 0.13% 0.17%
B 7077 5405 5 5 0.07% 0.09%
C 7077 5405 220 220 3.11% 4.07%
D 7077 5405 42 42 0.59% 0.78%

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 528458 4294.93 590 578 122.9
A 0 8 118124 956.38 590 578 122.9
A 2 79 24422 194.0 590 578 122.9
B 0 190 114543 1005.24 584 568 113.4
B 5 255 99546 872.97 584 568 113.4
B 0 245 28133 243.12 584 568 113.4
C 0 10 575937 4344.52 567 571 132.4
C 15 214 225755 1700.34 567 571 132.4
C 14 254 45672 340.55 567 571 132.4
D 12 16 87778 616.68 581 565 141.4
D 2 249 75262 528.18 581 565 141.4
D 12 128 74361 521.81 581 565 141.4

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