ASTROSAT CZTI

Data Quality Report

Orbit 46875

Creation date: 2024-06-27T23:28:49.161851
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/AS1A13_053T01_9000006274_46875cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46875cztM0_level2_quad_clean.evt
Size (bytes)467,729,28099,290,880
Size446.1 MB 94.7 MB
Events in quadrant A5,798,026657,760
Events in quadrant B3,326,288680,683
Events in quadrant C2,803,845658,842
Events in quadrant D4,889,576563,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208221
B0142382
C0132361
D0189641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63901722.691706%
B6389821.283456%
C6390661.032864%
D63905979.342723%

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 7150 6391 29 29 0.41% 0.45%
B 7149 6390 19 19 0.27% 0.30%
C 7150 6391 32 32 0.45% 0.50%
D 7150 6391 525 525 7.34% 8.21%

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 3010868 20707.64 691 675 145.4
A 13 248 101179 691.38 691 675 145.4
A 13 254 8803 55.91 691 675 145.4
B 3 112 321939 2367.0 685 663 135.7
B 0 200 105701 773.86 685 663 135.7
B 5 172 75353 550.28 685 663 135.7
C 14 254 101543 623.83 682 685 161.7
C 1 3 40093 243.75 682 685 161.7
C 3 233 6170 33.93 682 685 161.7
D 13 249 1059268 6321.75 665 644 167.5
D 1 52 640733 3822.4 665 644 167.5
D 2 249 565605 3373.76 665 644 167.5

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