ASTROSAT CZTI

Data Quality Report

Orbit 33674

Creation date: 2024-06-27T20:51:22.702449
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/AS1T04_076T01_9000004810_33674cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33674cztM0_level2_quad_clean.evt
Size (bytes)822,378,24060,647,040
Size784.3 MB 57.8 MB
Events in quadrant A12,047,59430,559
Events in quadrant B4,080,173458,991
Events in quadrant C4,202,338469,025
Events in quadrant D4,163,610451,083

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0399813
B0161382
C0163702
D0166612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6078602699.144455%
B60783926.449490%
C60781742.862784%
D6078520.855545%

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 7419 6077 3006 3006 40.52% 49.47%
B 7420 6079 338 338 4.56% 5.56%
C 7420 6079 78 78 1.05% 1.28%
D 7420 6079 50 50 0.67% 0.82%

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 15 169 11500798 933680.41 52 51 12.3
A 15 237 341198 27695.79 52 51 12.3
A 10 83 1164 90.36 52 51 12.3
B 5 172 1239019 9370.89 684 667 132.1
B 15 85 28968 214.16 684 667 132.1
B 0 219 26537 195.76 684 667 132.1
C 3 233 955918 6007.15 682 687 159.0
C 15 214 282926 1774.91 682 687 159.0
C 0 10 222982 1397.94 682 687 159.0
D 1 52 551347 2950.36 679 664 186.6
D 8 195 496166 2654.72 679 664 186.6
D 2 249 99906 531.7 679 664 186.6

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