ASTROSAT CZTI

Data Quality Report

Orbit 12325

Creation date: 2024-06-27T16:25:29.489150
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/AS1A04_048T01_9000001820_12325cztM0_level2.evt modeM0/AS1A04_048T01_9000001820_12325cztM0_level2_quad_clean.evt
Size (bytes)1,011,142,080162,970,560
Size964.3 MB 155.4 MB
Events in quadrant A8,177,6991,014,189
Events in quadrant B8,417,9221,016,929
Events in quadrant C6,038,0921,023,179
Events in quadrant D7,102,002975,575

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0333034
B0337013
C0270883
D0302823

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131124653.546370%
B1311210848.267236%
C131121090.831300%
D131122692.051556%

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 14783 13116 57 57 0.39% 0.43%
B 14783 13116 415 415 2.81% 3.16%
C 14783 13116 14 14 0.09% 0.11%
D 14783 13116 133 133 0.90% 1.01%

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 1 162 416972 1327.94 1538 1503 312.9
A 0 23 321846 1023.89 1538 1503 312.9
A 13 248 283460 901.2 1538 1503 312.9
B 4 239 1937893 6887.77 1481 1446 281.1
B 3 64 205250 724.91 1481 1446 281.1
B 0 85 190902 673.88 1481 1446 281.1
C 15 208 65970 184.67 1502 1511 349.0
C 0 207 46521 128.95 1502 1511 349.0
C 4 254 28300 76.75 1502 1511 349.0
D 1 52 613242 1704.53 1491 1447 358.9
D 10 199 188781 521.93 1491 1447 358.9
D 5 222 105667 290.37 1491 1447 358.9

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