ASTROSAT CZTI

Data Quality Report

Orbit 37713

Creation date: 2024-06-27T21:43:29.357250
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/AS1A11_075T01_9000005342_37713cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37713cztM0_level2_quad_clean.evt
Size (bytes)588,300,48056,851,200
Size561.0 MB 54.2 MB
Events in quadrant A7,104,005324,178
Events in quadrant B2,984,591349,128
Events in quadrant C3,039,567352,086
Events in quadrant D4,327,436322,138

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249381
B0124221
C0122931
D0167721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5330159429.906191%
B53301833.433396%
C53301412.645403%
D533054410.206379%

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 7123 5330 1433 1433 20.12% 26.89%
B 7123 5330 145 145 2.04% 2.72%
C 7122 5329 142 142 1.99% 2.66%
D 7122 5329 543 543 7.62% 10.19%

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 15 222 4547018 39639.33 568 557 114.7
A 10 83 231391 2012.58 568 557 114.7
A 9 143 76717 664.02 568 557 114.7
B 5 255 269308 2377.42 590 574 113.0
B 5 172 256512 2264.21 590 574 113.0
B 5 200 52941 463.27 590 574 113.0
C 14 254 484914 3622.46 580 585 133.7
C 15 214 233729 1743.76 580 585 133.7
C 0 10 55600 411.48 580 585 133.7
D 12 227 1512919 11036.51 567 550 137.0
D 2 250 294066 2141.93 567 550 137.0
D 13 249 153764 1118.08 567 550 137.0

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