ASTROSAT CZTI

Data Quality Report

Orbit 44783

Creation date: 2024-06-27T23:06:31.307185
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_004T13_9000006022_44783cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44783cztM0_level2_quad_clean.evt
Size (bytes)650,396,160127,696,320
Size620.3 MB 121.8 MB
Events in quadrant A7,844,996795,281
Events in quadrant B4,163,098888,362
Events in quadrant C3,947,031880,305
Events in quadrant D7,470,495720,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299721
B0183531
C0179191
D0280991

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8375101212.083582%
B83753534.214925%
C83761371.635626%
D8376112613.443171%

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 8525 8375 574 574 6.73% 6.85%
B 8525 8376 24 24 0.28% 0.29%
C 8526 8377 20 20 0.23% 0.24%
D 8526 8377 896 896 10.51% 10.70%

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 2166113 11335.72 919 897 191.0
A 15 223 1986710 10396.48 919 897 191.0
A 13 248 134193 697.85 919 897 191.0
B 5 255 144015 740.53 960 927 193.2
B 5 172 68335 348.86 960 927 193.2
B 4 158 49678 252.3 960 927 193.2
C 14 254 131806 584.65 955 956 223.8
C 1 3 36639 159.44 955 956 223.8
C 2 14 15465 64.83 955 956 223.8
D 1 52 1980961 8934.74 887 858 221.6
D 13 187 564233 2542.1 887 858 221.6
D 5 235 496613 2236.98 887 858 221.6

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