ASTROSAT CZTI

Data Quality Report

Orbit 40058

Creation date: 2024-06-27T22:11:48.997053
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_054T03_9000005516_40058cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40058cztM0_level2_quad_clean.evt
Size (bytes)367,819,20088,525,440
Size350.8 MB 84.4 MB
Events in quadrant A2,798,816597,439
Events in quadrant B3,204,659596,278
Events in quadrant C4,147,514576,769
Events in quadrant D3,042,593530,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115503
B0133092
C0159772
D0129332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5421150.276702%
B54212765.091312%
C54211883.467995%
D54211372.527209%

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 7214 5422 7 7 0.10% 0.13%
B 7214 5422 166 166 2.30% 3.06%
C 7214 5422 164 164 2.27% 3.02%
D 7214 5422 109 109 1.51% 2.01%

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 465859 3854.06 590 578 120.7
A 6 10 34362 279.84 590 578 120.7
A 7 3 8279 63.79 590 578 120.7
B 4 171 821098 7278.03 574 559 112.7
B 0 230 72329 636.59 574 559 112.7
B 0 221 34546 301.46 574 559 112.7
C 9 187 1583454 11907.13 569 572 132.9
C 15 214 222575 1670.0 569 572 132.9
C 14 254 94357 705.49 569 572 132.9
D 12 227 534886 3780.34 572 554 141.3
D 2 250 98551 693.32 572 554 141.3
D 9 19 80426 565.09 572 554 141.3

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