ASTROSAT CZTI

Data Quality Report

Orbit 39857

Creation date: 2024-06-27T22:09:32.026672
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_022T01_9000005498_39857cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39857cztM0_level2_quad_clean.evt
Size (bytes)405,126,72091,866,240
Size386.4 MB 87.6 MB
Events in quadrant A3,053,315636,573
Events in quadrant B4,602,200571,231
Events in quadrant C3,220,964611,022
Events in quadrant D3,667,398556,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128163
B0177322
C0133592
D0150392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5816200.343879%
B581678813.548831%
C5816510.876891%
D58161973.387208%

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 7159 5817 13 13 0.18% 0.22%
B 7159 5817 443 443 6.19% 7.62%
C 7159 5817 41 41 0.57% 0.70%
D 7159 5817 169 169 2.36% 2.91%

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 508257 3932.26 630 616 129.1
A 13 248 75594 580.79 630 616 129.1
A 13 254 11939 87.71 630 616 129.1
B 4 171 1877465 16667.37 577 562 112.6
B 5 207 91123 804.2 577 562 112.6
B 0 229 80625 710.98 577 562 112.6
C 9 187 523318 3683.72 611 615 141.9
C 15 214 243336 1710.56 611 615 141.9
C 12 249 35384 245.03 611 615 141.9
D 2 249 378021 2525.16 605 585 149.5
D 7 38 253915 1694.86 605 585 149.5
D 12 227 148852 991.95 605 585 149.5

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