ASTROSAT CZTI

Data Quality Report

Orbit 38654

Creation date: 2024-06-27T21:54:41.100671
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/AS1A12_061T03_9000005390_38654cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38654cztM0_level2_quad_clean.evt
Size (bytes)361,552,32093,582,720
Size344.8 MB 89.2 MB
Events in quadrant A3,296,978622,987
Events in quadrant B2,958,051634,399
Events in quadrant C3,013,191621,842
Events in quadrant D3,678,124561,477

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130873
B0123792
C0122992
D0145602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5617691.228414%
B56171152.047356%
C5617571.014777%
D56172143.809863%

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 7170 5618 56 56 0.78% 1.00%
B 7170 5618 93 93 1.30% 1.66%
C 7170 5618 59 59 0.82% 1.05%
D 7170 5618 165 165 2.30% 2.94%

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 441090 3405.77 635 621 129.3
A 9 143 267423 2062.95 635 621 129.3
A 13 248 68635 525.89 635 621 129.3
B 5 184 247706 2025.87 630 613 122.0
B 5 172 98235 800.38 630 613 122.0
B 0 155 46036 372.41 630 613 122.0
C 3 9 288997 1969.68 624 628 146.4
C 15 214 230332 1568.98 624 628 146.4
C 0 10 18414 121.49 624 628 146.4
D 5 222 497673 3242.08 617 600 153.3
D 13 249 262973 1711.29 617 600 153.3
D 12 233 142996 928.75 617 600 153.3

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