ASTROSAT CZTI

Data Quality Report

Orbit 49814

Creation date: 2024-12-13T16:50:24.498155
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_037T01_9000006440_49814cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49814cztM0_level2_quad_clean.evt
Size (bytes)1,159,424,64056,822,400
Size1.1 GB 54.2 MB
Events in quadrant A9,869,724423,712
Events in quadrant B3,794,889673,336
Events in quadrant C13,066,67843,069
Events in quadrant D15,669,243113,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338981
B0159831
C0435046
D0510731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6694247536.973409%
B66952754.107543%
C6694635494.920825%
D6694559483.567374%

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 6989 6694 2228 2228 31.88% 33.28%
B 6990 6696 63 63 0.90% 0.94%
C 6988 6693 3906 3906 55.90% 58.36%
D 6988 6693 5460 5460 78.13% 81.58%

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 0 98 1900497 11757.73 623 607 161.6
A 15 63 1072220 6631.82 623 607 161.6
A 5 16 960890 5942.84 623 607 161.6
B 10 28 322606 2083.54 726 703 154.5
B 4 206 153318 987.81 726 703 154.5
B 10 44 65884 421.89 726 703 154.5
C 1 44 3051168 45526.05 206 203 67.0
C 15 197 1946164 29037.34 206 203 67.0
C 15 164 1648113 24589.87 206 203 67.0
D 15 185 3726718 29759.22 415 400 125.2
D 7 61 2138465 17075.07 415 400 125.2
D 15 142 1592166 12712.2 415 400 125.2

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