ASTROSAT CZTI

Data Quality Report

Orbit 41088

Creation date: 2024-06-27T22:24:18.175515
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_095T02_9000005596_41088cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41088cztM0_level2_quad_clean.evt
Size (bytes)376,309,44092,269,440
Size358.9 MB 88.0 MB
Events in quadrant A3,117,979628,435
Events in quadrant B3,030,706639,153
Events in quadrant C2,918,639611,943
Events in quadrant D4,410,835508,926

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127623
B0130082
C0124082
D0171582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5799250.431109%
B5799701.207105%
C5799661.138127%
D579966511.467494%

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 7171 5800 13 13 0.18% 0.22%
B 7171 5800 41 41 0.57% 0.71%
C 7171 5800 58 58 0.81% 1.00%
D 7171 5800 552 552 7.70% 9.52%

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 558771 4241.86 635 622 131.6
A 13 248 44108 330.48 635 622 131.6
A 7 3 25193 186.73 635 622 131.6
B 5 255 141767 1137.78 630 613 124.1
B 0 190 134695 1080.78 630 613 124.1
B 0 186 119838 961.02 630 613 124.1
C 15 214 246912 1691.55 620 626 145.6
C 0 10 162493 1111.74 620 626 145.6
C 14 254 90991 620.65 620 626 145.6
D 2 249 1890183 12998.79 585 568 145.4
D 13 249 116239 795.71 585 568 145.4
D 2 153 35094 237.51 585 568 145.4

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