ASTROSAT CZTI

Data Quality Report

Orbit 24660

Creation date: 2024-06-27T19:08:28.846289
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/AS1T03_191T01_9000003618_24660cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24660cztM0_level2_quad_clean.evt
Size (bytes)2,333,370,240536,984,640
Size2.2 GB 512.1 MB
Events in quadrant A13,397,6283,712,937
Events in quadrant B13,955,6463,746,759
Events in quadrant C14,007,1223,555,029
Events in quadrant D27,367,5083,273,805

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587335
B0599365
C0594105
D01008235

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05840
B05840
C05840
D05840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A287552170.754651%
B287562921.015440%
C287564051.408402%
D28756346512.049659%

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 32060 28758 6 6 0.02% 0.02%
B 32061 28758 9 9 0.03% 0.03%
C 32061 28759 9 9 0.03% 0.03%
D 32061 28758 3150 3150 9.83% 10.95%

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 6 16 51279 69.71 3449 3374 687.2
A 13 254 49475 67.09 3449 3374 687.2
A 3 137 31243 40.56 3449 3374 687.2
B 0 190 235077 360.98 3418 3329 642.0
B 0 230 108652 164.05 3418 3329 642.0
B 0 189 107720 162.6 3418 3329 642.0
C 14 238 529751 687.33 3296 3305 765.9
C 10 91 333856 431.57 3296 3305 765.9
C 7 247 174775 223.87 3296 3305 765.9
D 1 52 10621491 13846.89 3178 3083 766.8
D 8 195 4075923 5311.17 3178 3083 766.8
D 7 238 215831 277.43 3178 3083 766.8

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