ASTROSAT CZTI

Data Quality Report

Orbit 01401

Creation date: 2024-06-27T14:12:07.730934
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/AS1G04_014T02_9000000232_01401cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01401cztM0_level2_quad_clean.evt
Size (bytes)1,074,919,68088,116,480
Size1.0 GB 84.0 MB
Events in quadrant A11,443,400519,596
Events in quadrant B7,228,762592,895
Events in quadrant C6,810,490578,984
Events in quadrant D6,686,203569,431

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382642
B0256311
C0243581
D0240171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5826121020.768967%
B5826340.583591%
C5826260.446275%
D5826270.463440%

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 6901 5826 2426 2426 35.15% 41.64%
B 6901 5827 296 296 4.29% 5.08%
C 6901 5826 141 141 2.04% 2.42%
D 6901 5826 189 189 2.74% 3.24%

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 15 127 4359356 11256.15 1614 1628 387.1
A 4 32 756256 1949.23 1614 1628 387.1
A 15 233 91373 231.81 1614 1628 387.1
B 5 191 119399 275.73 1822 1832 426.4
B 8 4 73601 168.32 1822 1832 426.4
B 6 53 53446 121.05 1822 1832 426.4
C 15 241 212068 451.01 1678 1736 466.4
C 3 79 24755 49.36 1678 1736 466.4
C 3 111 22372 44.25 1678 1736 466.4
D 2 16 299960 599.46 1621 1677 497.6
D 9 53 198205 394.96 1621 1677 497.6
D 2 88 41187 79.4 1621 1677 497.6

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