ASTROSAT CZTI

Data Quality Report

Orbit 48558

Creation date: 2024-09-20T02:06:56.061015
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_9000006436_48558cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48558cztM0_level2_quad_clean.evt
Size (bytes)511,519,680103,573,440
Size487.8 MB 98.8 MB
Events in quadrant A6,895,524703,301
Events in quadrant B3,931,504675,535
Events in quadrant C2,786,773704,610
Events in quadrant D4,802,682587,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025436481
B016868164
C013758165
D019785247

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01371
B01382
C01371
D01382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66702123.178411%
B66834216.299566%
C667770.104838%
D667974611.169337%

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 7576 6676 71 71 0.94% 1.06%
B 7593 6688 223 223 2.94% 3.33%
C 7587 6684 1 1 0.01% 0.01%
D 7587 6686 646 646 8.51% 9.66%

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 10 83 4080154 27813.67 701 686 146.7
A 7 3 58085 391.34 701 686 146.7
A 0 31 23896 158.24 701 686 146.7
B 12 16 1210178 9134.38 672 649 132.4
B 5 255 50331 375.2 672 649 132.4
B 12 111 16748 121.58 672 649 132.4
C 14 254 19194 111.55 702 707 165.7
C 12 250 17243 99.78 702 707 165.7
C 0 207 6530 35.14 702 707 165.7
D 2 165 2088836 12496.31 664 644 167.1
D 2 249 90088 535.26 664 644 167.1
D 2 234 32734 192.04 664 644 167.1

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