ASTROSAT CZTI

Data Quality Report

Orbit 00306

Creation date: 2024-06-27T13:58:59.018987
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/AS1P01_126T04_9000000036_00306cztM0_level2.evt modeM0/AS1P01_126T04_9000000036_00306cztM0_level2_quad_clean.evt
Size (bytes)875,583,36066,568,320
Size835.0 MB 63.5 MB
Events in quadrant A6,906,834406,209
Events in quadrant B6,702,157408,547
Events in quadrant C6,201,779399,136
Events in quadrant D6,314,698390,479

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246853
B0240912
C0226062
D0229822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5889330.560367%
B588960.101885%
C5889110.186789%
D5889130.220751%

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 7623 5890 170 170 2.23% 2.89%
B 7623 5890 60 60 0.79% 1.02%
C 7623 5890 51 51 0.67% 0.87%
D 7623 5890 130 130 1.71% 2.21%

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 6 109460 279.82 1736 1723 385.0
A 0 69 42486 105.87 1736 1723 385.0
A 15 127 33606 82.81 1736 1723 385.0
B 0 183 26041 59.72 1733 1746 406.8
B 5 46 18937 42.26 1733 1746 406.8
B 15 80 10636 21.85 1733 1746 406.8
C 1 1 66060 148.12 1546 1599 435.2
C 2 192 42187 93.27 1546 1599 435.2
C 10 19 8092 14.92 1546 1599 435.2
D 1 5 260035 550.17 1497 1559 469.8
D 13 7 98704 206.77 1497 1559 469.8
D 7 85 49827 102.74 1497 1559 469.8

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