ASTROSAT CZTI

Data Quality Report

Orbit 03847

Creation date: 2024-06-27T14:34:18.981897
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/AS1G05_189T01_9000000492_03847cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03847cztM0_level2_quad_clean.evt
Size (bytes)445,582,08062,634,240
Size424.9 MB 59.7 MB
Events in quadrant A2,816,187381,685
Events in quadrant B2,755,826383,616
Events in quadrant C4,918,823364,651
Events in quadrant D2,614,363365,419

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123302
B0120941
C0188691
D0120711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5736280.488145%
B5736310.540446%
C57361061.847978%
D5736360.627615%

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 6881 5736 3 3 0.04% 0.05%
B 6881 5736 1 1 0.01% 0.02%
C 6881 5736 75 75 1.09% 1.31%
D 6881 5736 28 28 0.41% 0.49%

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 15 234 240428 1778.34 655 642 134.8
A 8 15 30426 220.89 655 642 134.8
A 13 251 17685 126.39 655 642 134.8
B 15 204 131971 1021.36 663 648 128.6
B 4 81 41431 317.19 663 648 128.6
B 0 219 14316 106.3 663 648 128.6
C 2 53 2346036 15975.62 628 632 146.8
C 1 16 75397 509.26 628 632 146.8
C 9 247 14242 92.7 628 632 146.8
D 13 248 148950 903.73 626 611 164.1
D 2 63 63792 384.92 626 611 164.1
D 2 14 13461 78.29 626 611 164.1

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