ASTROSAT CZTI

Data Quality Report

Orbit 43141

Creation date: 2024-06-27T22:48:34.467981
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/AS1A09_107T01_9000005854_43141cztM0_level2.fits modeM0/AS1A09_107T01_9000005854_43141cztM0_level2_quad_clean.evt
Size (bytes)303,770,88086,932,800
Size289.7 MB 82.9 MB
Events in quadrant A3,029,403589,522
Events in quadrant B3,251,504549,545
Events in quadrant C2,397,920604,006
Events in quadrant D2,191,025552,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119921
B0128771
C099481
D098661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4802250.520616%
B480252210.870471%
C480260.124948%
D480280.166597%

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 6924 4803 11 11 0.16% 0.23%
B 6924 4803 424 424 6.12% 8.83%
C 6924 4803 3 3 0.04% 0.06%
D 6924 4803 6 6 0.09% 0.12%

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 495760 4462.44 546 536 111.0
A 12 189 236112 2122.76 546 536 111.0
A 15 237 149572 1342.95 546 536 111.0
B 0 229 1215681 13130.64 496 483 92.5
B 5 255 61411 658.35 496 483 92.5
B 5 32 17207 180.71 496 483 92.5
C 15 214 219162 1777.72 538 541 123.0
C 14 254 77729 627.65 538 541 123.0
C 13 61 3511 24.15 538 541 123.0
D 1 52 57202 435.72 540 525 130.1
D 2 234 23443 176.19 540 525 130.1
D 9 49 17772 132.59 540 525 130.1

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