ASTROSAT CZTI

Data Quality Report

Orbit 49842

Creation date: 2024-12-15T14:11:38.490745
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/AS1A13_037T01_9000006440_49842cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49842cztM0_level2_quad_clean.evt
Size (bytes)1,167,001,92051,065,280
Size1.1 GB 48.7 MB
Events in quadrant A11,437,661391,059
Events in quadrant B4,318,192670,139
Events in quadrant C12,783,8938,241
Events in quadrant D14,145,56913,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386101
B0174891
C0425761
D0465701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6630284542.911011%
B66304016.048265%
C6631656699.019756%
D6631651498.235560%

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 7520 6630 2336 2336 31.06% 35.23%
B 7520 6631 155 155 2.06% 2.34%
C 7521 6631 2914 2914 38.74% 43.95%
D 7520 6630 4584 4584 60.96% 69.14%

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 3 84 4733778 29839.7 611 596 158.6
A 4 4 1705433 10747.91 611 596 158.6
A 3 130 323681 2036.85 611 596 158.6
B 5 185 433127 2837.97 715 693 152.4
B 4 206 372801 2442.06 715 693 152.4
B 0 229 325224 2129.82 715 693 152.4
C 15 230 3020840 58168.02 156 153 51.9
C 15 197 2792840 53777.53 156 153 51.9
C 1 44 1780893 34290.92 156 153 51.9
D 8 176 6974985 170739.84 113 107 40.9
D 7 61 2645603 64759.78 113 107 40.9
D 7 126 702971 17205.59 113 107 40.9

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