ASTROSAT CZTI

Data Quality Report

Orbit 46784

Creation date: 2024-06-27T23:27:36.170836
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_053T01_9000006266_46784cztM0_level2.fits modeM0/AS1A13_053T01_9000006266_46784cztM0_level2_quad_clean.evt
Size (bytes)533,643,840125,510,400
Size508.9 MB 119.7 MB
Events in quadrant A7,229,846833,497
Events in quadrant B3,805,923858,565
Events in quadrant C3,390,627817,190
Events in quadrant D4,709,877738,096

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262400
B0167620
C0161430
D0196483

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79591822.286719%
B7960500.628141%
C7960170.213568%
D79582723.417944%

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 7959 7959 147 147 1.85% 1.85%
B 7960 7960 18 18 0.23% 0.23%
C 7960 7960 8 8 0.10% 0.10%
D 7960 7959 251 251 3.15% 3.15%

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 3448875 19514.24 849 830 176.7
A 13 248 476173 2690.21 849 830 176.7
A 13 254 12167 64.16 849 830 176.7
B 3 112 266532 1579.51 852 825 168.2
B 5 172 53673 314.16 852 825 168.2
B 4 171 45270 264.21 852 825 168.2
C 14 254 46837 231.72 845 847 198.5
C 1 241 18457 88.73 845 847 198.5
C 3 233 13174 62.11 845 847 198.5
D 13 249 636470 3052.25 834 805 208.3
D 2 37 340804 1632.56 834 805 208.3
D 1 52 314741 1507.42 834 805 208.3

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