ASTROSAT CZTI

Data Quality Report

Orbit 38793

Creation date: 2024-06-27T21:56:29.022310
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_044T04_9000005396_38793cztM0_level2.fits modeM0/AS1A12_044T04_9000005396_38793cztM0_level2_quad_clean.evt
Size (bytes)339,442,56089,412,480
Size323.7 MB 85.3 MB
Events in quadrant A2,891,322613,952
Events in quadrant B3,099,885612,965
Events in quadrant C2,560,175595,872
Events in quadrant D3,615,151526,340

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117943
B0124342
C0106592
D0142752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5115340.664712%
B51152424.731183%
C5115260.508309%
D51152304.496579%

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 6999 5116 26 26 0.37% 0.51%
B 6999 5116 194 194 2.77% 3.79%
C 6999 5116 19 19 0.27% 0.37%
D 6999 5116 185 185 2.64% 3.62%

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 393547 3322.43 578 567 118.3
A 13 248 131611 1107.91 578 567 118.3
A 12 16 76399 641.12 578 567 118.3
B 4 171 679157 6096.42 579 565 111.3
B 0 230 54323 482.96 579 565 111.3
B 5 184 29981 264.27 579 565 111.3
C 15 214 226609 1703.38 569 573 132.7
C 0 10 73681 550.93 569 573 132.7
C 14 254 20497 150.14 569 573 132.7
D 10 118 356353 2678.79 550 535 132.8
D 2 16 301028 2262.28 550 535 132.8
D 2 249 257886 1937.48 550 535 132.8

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