ASTROSAT CZTI

Data Quality Report

Orbit 42759

Creation date: 2024-06-27T22:43:54.090215
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/AS1A05_013T01_9000005822_42759cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42759cztM0_level2_quad_clean.evt
Size (bytes)398,888,64084,919,680
Size380.4 MB 81.0 MB
Events in quadrant A3,349,620573,983
Events in quadrant B2,547,947579,999
Events in quadrant C5,702,379513,721
Events in quadrant D2,757,700536,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131411
B0111921
C0202761
D0119421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52441532.917620%
B5244490.934401%
C524480915.427155%
D5244711.353928%

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 6887 5245 125 125 1.82% 2.38%
B 6887 5245 39 39 0.57% 0.74%
C 6887 5245 869 869 12.62% 16.57%
D 6887 5245 74 74 1.07% 1.41%

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 521224 4367.63 574 562 119.2
A 15 223 209882 1755.9 574 562 119.2
A 15 237 201541 1685.93 574 562 119.2
B 5 255 99518 886.3 569 553 111.7
B 0 229 67467 599.26 569 553 111.7
B 0 156 48451 428.96 569 553 111.7
C 0 239 3243004 25873.52 532 536 125.3
C 15 214 205684 1636.99 532 536 125.3
C 14 254 152630 1213.65 532 536 125.3
D 5 171 109601 794.88 560 544 137.2
D 9 19 92870 672.93 560 544 137.2
D 12 6 77736 562.63 560 544 137.2

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