ASTROSAT CZTI

Data Quality Report

Orbit 36737

Creation date: 2024-06-27T21:30:58.884593
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_101T01_9000005238_36737cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36737cztM0_level2_quad_clean.evt
Size (bytes)433,327,68082,316,160
Size413.3 MB 78.5 MB
Events in quadrant A2,581,153548,403
Events in quadrant B3,127,390548,042
Events in quadrant C3,105,297542,981
Events in quadrant D3,956,512489,179

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110443
B0126142
C0123892
D0153212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5193100.192567%
B51932364.544579%
C51931653.177354%
D51934939.493549%

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 7104 5194 3 3 0.04% 0.06%
B 7104 5194 169 169 2.38% 3.25%
C 7104 5194 115 115 1.62% 2.21%
D 7104 5194 484 484 6.81% 9.32%

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 207173 1714.27 604 595 120.5
A 9 143 22232 179.55 604 595 120.5
A 13 254 8496 65.57 604 595 120.5
B 5 200 523311 4635.87 592 577 112.8
B 0 213 56529 496.21 592 577 112.8
B 0 189 55604 488.01 592 577 112.8
C 0 10 435588 3195.47 585 590 136.1
C 15 214 215449 1578.34 585 590 136.1
C 14 254 129481 946.83 585 590 136.1
D 12 227 1311064 9671.16 559 544 135.5
D 13 171 189546 1394.77 559 544 135.5
D 13 249 115648 849.43 559 544 135.5

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