ASTROSAT CZTI

Data Quality Report

Orbit 24464

Creation date: 2024-06-27T19:06:16.226275
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/AS1T03_183T01_9000003606_24464cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24464cztM0_level2_quad_clean.evt
Size (bytes)631,955,520116,893,440
Size602.7 MB 111.5 MB
Events in quadrant A3,108,596807,837
Events in quadrant B5,683,967781,097
Events in quadrant C4,618,834759,964
Events in quadrant D5,275,005724,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137403
B0213233
C0181563
D0202803

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6682210.314277%
B668273911.059563%
C66824296.420233%
D66824817.198444%

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 7812 6684 0 0 0.00% 0.00%
B 7812 6684 467 467 5.98% 6.99%
C 7812 6684 177 177 2.27% 2.65%
D 7812 6684 413 413 5.29% 6.18%

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 13 254 9513 53.64 806 790 162.6
A 3 137 7039 38.42 806 790 162.6
A 0 226 6984 38.09 806 790 162.6
B 3 64 2081569 14246.52 782 763 146.1
B 6 36 283598 1936.47 782 763 146.1
B 5 172 185457 1264.53 782 763 146.1
C 2 16 1434705 8088.89 767 772 177.3
C 14 238 124384 697.3 767 772 177.3
C 10 9 28721 157.66 767 772 177.3
D 12 218 1098773 5964.63 758 734 184.1
D 1 52 589923 3200.52 758 734 184.1
D 7 238 406516 2204.24 758 734 184.1

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