ASTROSAT CZTI

Data Quality Report

Orbit 46347

Creation date: 2024-06-27T23:22:03.246730
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_070T05_9000006198_46347cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46347cztM0_level2_quad_clean.evt
Size (bytes)594,112,320102,663,360
Size566.6 MB 97.9 MB
Events in quadrant A9,090,106535,234
Events in quadrant B3,605,800750,883
Events in quadrant C3,299,195728,746
Events in quadrant D5,463,600614,311

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314721
B0155431
C0149331
D0210281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6869203629.640413%
B68702083.027656%
C6870761.106259%
D68706839.941776%

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 7338 6870 1140 1140 15.54% 16.59%
B 7340 6872 73 73 0.99% 1.06%
C 7340 6872 37 37 0.50% 0.54%
D 7340 6872 444 444 6.05% 6.46%

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 15 223 3724845 27416.7 646 632 135.8
A 10 83 2720781 20025.04 646 632 135.8
A 13 248 100852 737.79 646 632 135.8
B 5 172 388917 2551.97 765 740 152.1
B 3 112 47302 306.11 765 740 152.1
B 15 201 47064 304.55 765 740 152.1
C 12 2 247644 1374.61 762 765 179.6
C 12 249 35790 195.02 762 765 179.6
C 1 3 21449 115.17 762 765 179.6
D 12 1 1075454 5866.61 733 710 183.2
D 5 235 492375 2683.81 733 710 183.2
D 1 52 451594 2461.2 733 710 183.2

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