ASTROSAT CZTI

Data Quality Report

Orbit 39867

Creation date: 2024-06-27T22:09:38.465664
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/AS1A12_032T02_9000005500_39867cztM0_level2.fits modeM0/AS1A12_032T02_9000005500_39867cztM0_level2_quad_clean.evt
Size (bytes)1,463,659,200313,197,120
Size1.4 GB 298.7 MB
Events in quadrant A16,284,7291,965,669
Events in quadrant B10,267,1792,232,687
Events in quadrant C13,801,1812,081,062
Events in quadrant D12,381,8131,916,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0601826
B0427215
C0523075
D0495495

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18695233212.473924%
B186952681.433538%
C1869511406.097887%
D186959174.905055%

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 28319 18700 1819 1819 6.42% 9.73%
B 28319 18700 157 157 0.55% 0.84%
C 28319 18700 1130 1130 3.99% 6.04%
D 28319 18700 804 804 2.84% 4.30%

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 6 10 5985326 14594.38 2033 1992 410.0
A 10 83 1437988 3502.64 2033 1992 410.0
A 13 248 793779 1931.3 2033 1992 410.0
B 4 170 882966 2215.0 2130 2079 397.7
B 5 172 340673 851.4 2130 2079 397.7
B 5 255 281867 703.53 2130 2079 397.7
C 9 187 4502598 9469.75 2069 2084 475.3
C 15 214 760188 1595.16 2069 2084 475.3
C 1 16 296613 619.73 2069 2084 475.3
D 2 249 1143048 2274.54 2091 2040 501.6
D 13 249 814211 1619.02 2091 2040 501.6
D 12 227 764544 1520.01 2091 2040 501.6

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