ASTROSAT CZTI

Data Quality Report

Orbit 04875

Creation date: 2024-06-27T14:48:16.050645
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_009T02_9000000618_04875cztM0_level2.evt modeM0/AS1G05_009T02_9000000618_04875cztM0_level2_quad_clean.evt
Size (bytes)1,379,183,040165,741,120
Size1.3 GB 158.1 MB
Events in quadrant A12,781,619937,675
Events in quadrant B8,768,192983,656
Events in quadrant C7,824,171969,661
Events in quadrant D11,221,806930,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496585
B0373324
C0355684
D0453434

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17353204811.801994%
B173532611.504063%
C173532041.175589%
D173537154.120325%

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 21103 17353 1642 1642 7.78% 9.46%
B 21103 17353 15 15 0.07% 0.09%
C 21103 17353 0 0 0.00% 0.00%
D 21103 17353 440 440 2.09% 2.54%

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 13 251 5262435 13487.37 1918 1871 390.0
A 8 15 93419 234.72 1918 1871 390.0
A 0 50 43861 107.66 1918 1871 390.0
B 4 80 414082 1051.14 2052 2001 392.0
B 15 204 184004 464.25 2052 2001 392.0
B 15 54 79505 197.7 2052 2001 392.0
C 9 247 79575 170.46 1978 1980 455.2
C 13 61 16090 31.0 1978 1980 455.2
C 12 4 15128 28.88 1978 1980 455.2
D 2 136 948915 1968.43 1974 1913 481.1
D 12 233 740379 1534.97 1974 1913 481.1
D 1 31 664008 1376.22 1974 1913 481.1

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