ASTROSAT CZTI

Data Quality Report

Orbit 20240412_A13_093T40_9000006182_level2

Creation date: 2024-04-16T12:00:08.411068
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_093T40_9000006182cztM0_level2.fits modeM0/AS1A13_093T40_9000006182cztM0_level2_quad_clean.evt
Size (bytes)1,282,233,6001,592,565,120
Size1.2 GB 1.5 GB
Events in quadrant A7,562,46210,009,426
Events in quadrant B7,428,48210,248,535
Events in quadrant C7,623,6649,736,459
Events in quadrant D6,206,1908,239,728

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029600
B029600
C029600
D029600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04933900
B03470040
C03115290
D04652640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14596960254.127589%
B14597035412.425841%
C14597017891.225594%
D1459701495610.245941%

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 164104 145947 0 0 0.00% 0.00%
B 164105 145956 0 0 0.00% 0.00%
C 164105 145924 0 0 0.00% 0.00%
D 164105 144909 0 0 0.00% 0.00%

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 7 110 6010 8.3 1972 1849 501.4
A 15 236 5872 8.02 1972 1849 501.4
A 0 29 5786 7.85 1972 1849 501.4
B 2 9 7009 13.63 1961 1873 376.8
B 2 8 5614 9.93 1961 1873 376.8
B 3 17 5201 8.83 1961 1873 376.8
C 3 202 6018 7.93 2017 1879 522.0
C 1 81 5899 7.7 2017 1879 522.0
C 3 203 5783 7.48 2017 1879 522.0
D 15 47 4634 6.09 1782 1617 495.2
D 4 16 4591 6.01 1782 1617 495.2
D 6 38 4542 5.91 1782 1617 495.2

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