ASTROSAT CZTI

Data Quality Report

Orbit 01396

Creation date: 2024-06-27T14:12:04.153698
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_01396cztM0_level2.evt modeM0/AS1G04_014T02_9000000232_01396cztM0_level2_quad_clean.evt
Size (bytes)1,256,875,20093,839,040
Size1.2 GB 89.5 MB
Events in quadrant A13,525,574543,909
Events in quadrant B9,189,601626,456
Events in quadrant C7,637,102611,852
Events in quadrant D7,278,320600,222

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450532
B0319751
C0273671
D0262991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6574150022.817159%
B65741442.190447%
C6574300.456343%
D6574530.806206%

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 6978 6573 3060 3060 43.85% 46.55%
B 6978 6574 603 603 8.64% 9.17%
C 6979 6574 171 171 2.45% 2.60%
D 6979 6574 196 196 2.81% 2.98%

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 4 32 4240954 9490.7 1846 1855 446.7
A 15 127 2073882 4638.95 1846 1855 446.7
A 3 80 121770 268.47 1846 1855 446.7
B 8 4 583347 1181.05 2063 2074 492.2
B 12 52 220695 444.2 2063 2074 492.2
B 5 191 214063 430.73 2063 2074 492.2
C 15 241 236881 446.04 1876 1937 526.7
C 3 79 33619 60.15 1876 1937 526.7
C 3 111 28451 50.34 1876 1937 526.7
D 13 205 86438 153.4 1884 1935 550.9
D 9 53 82324 145.93 1884 1935 550.9
D 2 16 30102 51.13 1884 1935 550.9

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