ASTROSAT CZTI

Data Quality Report

Orbit 16446

Creation date: 2024-06-27T17:22:48.463142
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_069T04_9000002428_16446cztM0_level2.evt modeM0/AS1A05_069T04_9000002428_16446cztM0_level2_quad_clean.evt
Size (bytes)568,103,04075,277,440
Size541.8 MB 71.8 MB
Events in quadrant A3,343,607461,685
Events in quadrant B3,875,702471,219
Events in quadrant C6,365,191421,083
Events in quadrant D3,148,953440,976

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145132
B0159391
C0237301
D0143551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69471712.461494%
B69472042.936519%
C694799214.279545%
D69471011.453865%

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 7493 6948 5 5 0.07% 0.07%
B 7493 6948 16 16 0.21% 0.23%
C 7493 6948 517 517 6.90% 7.44%
D 7493 6948 5 5 0.07% 0.07%

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 116223 674.5 838 818 171.1
A 0 226 7304 37.91 838 818 171.1
A 15 223 6548 33.49 838 818 171.1
B 15 35 217348 1323.17 845 821 163.6
B 4 173 130260 790.99 845 821 163.6
B 4 216 73812 446.04 845 821 163.6
C 4 254 1662732 9247.63 762 766 179.7
C 3 233 1574750 8758.07 762 766 179.7
C 14 238 117255 648.18 762 766 179.7
D 10 70 30184 149.27 816 793 196.9
D 2 234 25985 127.95 816 793 196.9
D 14 226 7820 35.69 816 793 196.9

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