ASTROSAT CZTI

Data Quality Report

Orbit 27790

Creation date: 2024-06-27T19:44:26.044847
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/AS1A10_016T01_9000004016_27790cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27790cztM0_level2_quad_clean.evt
Size (bytes)682,197,12073,056,960
Size650.6 MB 69.7 MB
Events in quadrant A3,436,911463,210
Events in quadrant B4,719,916459,630
Events in quadrant C4,770,671444,311
Events in quadrant D7,308,900406,464

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142260
B0183340
C0186400
D0261200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6282751.193887%
B62824076.478828%
C62824096.510665%
D6282142522.683859%

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 7502 6282 2 2 0.03% 0.03%
B 7502 6282 263 263 3.51% 4.19%
C 7502 6282 214 214 2.85% 3.41%
D 7502 6282 1260 1260 16.80% 20.06%

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 0 31 11140 58.0 888 871 177.0
A 13 254 11119 57.88 888 871 177.0
A 3 137 7647 38.27 888 871 177.0
B 3 64 723779 4554.44 856 837 158.7
B 10 245 589627 3709.3 856 837 158.7
B 0 190 33714 207.12 856 837 158.7
C 3 233 1325593 6803.26 846 854 194.7
C 14 238 136918 698.76 846 854 194.7
C 4 175 11584 55.1 846 854 194.7
D 1 52 3696883 19804.82 786 766 186.6
D 13 104 265931 1420.83 786 766 186.6
D 2 250 198562 1059.85 786 766 186.6

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