ASTROSAT CZTI

Data Quality Report

Orbit 41126

Creation date: 2024-06-27T22:24:47.288851
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_052T04_9000005602_41126cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41126cztM0_level2_quad_clean.evt
Size (bytes)397,120,32093,314,880
Size378.7 MB 89.0 MB
Events in quadrant A2,998,161654,739
Events in quadrant B4,594,089583,804
Events in quadrant C2,666,855635,254
Events in quadrant D4,035,753586,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119052
B0169391
C0109031
D0156701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5211110.211092%
B521177814.929956%
C5211250.479754%
D52111031.976588%

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 7243 5212 2 2 0.03% 0.04%
B 7243 5212 591 591 8.16% 11.34%
C 7243 5212 26 26 0.36% 0.50%
D 7243 5212 92 92 1.27% 1.77%

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 465226 3667.06 622 608 126.7
A 2 79 57394 448.19 622 608 126.7
A 12 189 51147 398.89 622 608 126.7
B 0 245 2001014 18149.94 580 565 110.2
B 0 186 241014 2181.58 580 565 110.2
B 5 255 64986 584.49 580 565 110.2
C 15 214 225198 1634.12 599 605 137.4
C 0 10 79786 576.12 599 605 137.4
C 12 249 9939 67.91 599 605 137.4
D 2 16 1114096 7487.72 606 589 148.7
D 2 249 300716 2018.19 606 589 148.7
D 13 249 198039 1327.74 606 589 148.7

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