ASTROSAT CZTI

Data Quality Report

Orbit 04546

Creation date: 2024-06-27T14:43:38.217802
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/AS1G05_233T10_9000000570_04546cztM0_level2.evt modeM0/AS1G05_233T10_9000000570_04546cztM0_level2_quad_clean.evt
Size (bytes)584,110,08075,314,880
Size557.1 MB 71.8 MB
Events in quadrant A7,797,948430,187
Events in quadrant B3,260,349476,478
Events in quadrant C3,125,078467,142
Events in quadrant D3,067,458454,972

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276312
B0137741
C0137861
D0138321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6467168426.039895%
B64671552.396784%
C64671251.932890%
D64671241.917427%

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 7572 6468 1022 1022 13.50% 15.80%
B 7572 6468 4 4 0.05% 0.06%
C 7572 6468 9 9 0.12% 0.14%
D 7572 6468 11 11 0.15% 0.17%

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 0 13 4694720 32796.43 701 685 143.1
A 13 251 230122 1603.04 701 685 143.1
A 0 50 125225 870.14 701 685 143.1
B 8 3 60084 399.35 781 764 148.5
B 4 80 52159 346.0 781 764 148.5
B 12 18 31487 206.83 781 764 148.5
C 14 48 177380 1017.04 747 749 173.7
C 9 247 26855 150.32 747 749 173.7
C 13 61 6015 30.32 747 749 173.7
D 13 235 126278 696.42 744 723 180.3
D 2 136 59138 324.01 744 723 180.3
D 9 35 16428 87.11 744 723 180.3

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