ASTROSAT CZTI

Data Quality Report

Orbit 18874

Creation date: 2024-06-27T17:55:56.592717
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/AS1T03_094T01_9000002816_18874cztM0_level2.evt modeM0/AS1T03_094T01_9000002816_18874cztM0_level2_quad_clean.evt
Size (bytes)461,090,88079,922,880
Size439.7 MB 76.2 MB
Events in quadrant A2,870,549521,789
Events in quadrant B2,959,356535,179
Events in quadrant C2,872,526503,838
Events in quadrant D4,880,410466,734

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117881
B0120491
C0117941
D0181451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5613440.783895%
B5614741.318133%
C5614741.318133%
D561471412.718204%

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 6943 5614 0 0 0.00% 0.00%
B 6944 5615 2 2 0.03% 0.04%
C 6944 5615 0 0 0.00% 0.00%
D 6944 5615 529 529 7.62% 9.42%

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 13 254 8727 53.6 741 725 149.3
A 0 226 6646 39.66 741 725 149.3
A 12 194 5509 32.05 741 725 149.3
B 4 216 22308 156.26 737 722 138.1
B 7 220 16185 111.93 737 722 138.1
B 12 111 15404 106.28 737 722 138.1
C 14 238 112120 678.36 704 709 164.2
C 3 233 13985 80.83 704 709 164.2
C 13 61 5150 27.04 704 709 164.2
D 12 1 1544083 9456.32 665 645 163.2
D 1 52 552452 3380.8 665 645 163.2
D 12 233 115769 705.34 665 645 163.2

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