ASTROSAT CZTI

Data Quality Report

Orbit 40184

Creation date: 2024-06-27T22:13:12.992210
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_032T04_9000005528_40184cztM0_level2.fits modeM0/AS1A12_032T04_9000005528_40184cztM0_level2_quad_clean.evt
Size (bytes)488,851,200104,725,440
Size466.2 MB 99.9 MB
Events in quadrant A3,601,114741,793
Events in quadrant B3,228,671760,762
Events in quadrant C6,244,237614,398
Events in quadrant D4,555,117634,726

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144493
B0135682
C0224402
D0176982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6007580.965540%
B6007530.882304%
C6007108918.128850%
D60073776.276011%

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 18725 6009 47 47 0.25% 0.78%
B 18725 6009 21 21 0.11% 0.35%
C 18725 6009 1091 1091 5.83% 18.16%
D 18725 6009 362 362 1.93% 6.02%

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 546521 3958.41 685 675 137.9
A 13 248 229138 1656.79 685 675 137.9
A 2 79 146694 1058.91 685 675 137.9
B 0 229 230409 1792.84 687 670 128.1
B 5 255 108682 842.91 687 670 128.1
B 4 171 57971 447.17 687 670 128.1
C 9 187 3386365 23192.52 634 640 146.0
C 15 214 238309 1628.05 634 640 146.0
C 9 54 88969 605.06 634 640 146.0
D 12 227 1623090 10293.57 646 630 157.6
D 13 249 205012 1296.69 646 630 157.6
D 2 249 77629 488.51 646 630 157.6

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