ASTROSAT CZTI

Data Quality Report

Orbit 21326

Creation date: 2024-06-27T18:26:25.549715
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/AS1A05_037T01_9000003144_21326cztM0_level2.evt modeM0/AS1A05_037T01_9000003144_21326cztM0_level2_quad_clean.evt
Size (bytes)637,692,480118,025,280
Size608.2 MB 112.6 MB
Events in quadrant A4,039,208761,327
Events in quadrant B4,360,287774,950
Events in quadrant C3,952,250749,108
Events in quadrant D6,401,052714,729

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173912
B0182712
C0170872
D0247362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8263660.798741%
B82631551.875832%
C8263700.847150%
D82632262.735084%

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 8973 8265 16 16 0.18% 0.19%
B 8973 8265 69 69 0.77% 0.83%
C 8973 8265 0 0 0.00% 0.00%
D 8973 8265 157 157 1.75% 1.90%

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 15 174 56342 270.7 1012 989 204.5
A 4 2 26914 126.78 1012 989 204.5
A 12 96 23592 110.54 1012 989 204.5
B 3 64 251544 1289.79 1008 982 194.3
B 0 230 60552 306.64 1008 982 194.3
B 0 190 51487 259.98 1008 982 194.3
C 14 238 148627 653.22 969 978 226.0
C 8 128 12152 49.44 969 978 226.0
C 13 61 6891 26.16 969 978 226.0
D 13 174 988694 4208.62 971 945 234.7
D 1 20 533751 2270.19 971 945 234.7
D 12 235 433284 1842.12 971 945 234.7

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