ASTROSAT CZTI

Data Quality Report

Orbit 41779

Creation date: 2024-06-27T22:32:46.482340
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_9000005700_41779cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41779cztM0_level2_quad_clean.evt
Size (bytes)340,776,00093,911,040
Size325.0 MB 89.6 MB
Events in quadrant A3,004,403650,310
Events in quadrant B3,276,637641,656
Events in quadrant C3,291,611598,002
Events in quadrant D2,634,827588,002

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119193
B0130462
C0127352
D0113242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5224190.363706%
B52241613.081930%
C52242735.225881%
D5224140.267994%

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 7318 5225 5 5 0.07% 0.10%
B 7318 5225 119 119 1.63% 2.28%
C 7318 5225 261 261 3.57% 5.00%
D 7318 5225 10 10 0.14% 0.19%

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 569593 4487.25 618 606 126.8
A 15 223 32122 248.55 618 606 126.8
A 13 254 9237 68.07 618 606 126.8
B 0 190 334788 2923.71 601 585 114.3
B 4 141 276231 2411.44 601 585 114.3
B 5 255 176881 1542.29 601 585 114.3
C 0 10 846988 6445.49 570 573 131.3
C 15 214 209426 1590.42 570 573 131.3
C 12 249 7520 52.9 570 573 131.3
D 2 249 84804 575.12 601 584 146.4
D 13 249 66389 449.36 601 584 146.4
D 1 52 52628 355.39 601 584 146.4

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