ASTROSAT CZTI

Data Quality Report

Orbit 36638

Creation date: 2024-06-27T21:29:32.957967
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/AS1A11_049T03_9000005228_36638cztM0_level2.evt modeM0/AS1A11_049T03_9000005228_36638cztM0_level2_quad_clean.evt
Size (bytes)494,821,44078,042,240
Size471.9 MB 74.4 MB
Events in quadrant A2,758,563520,367
Events in quadrant B4,405,771506,710
Events in quadrant C3,235,767511,503
Events in quadrant D4,249,806476,917

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110423
B0163172
C0125592
D0160362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4960120.241935%
B496053810.846774%
C49601823.669355%
D49602605.241935%

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 7083 4961 0 0 0.00% 0.00%
B 7083 4961 303 303 4.28% 6.11%
C 7083 4961 133 133 1.88% 2.68%
D 7083 4961 250 250 3.53% 5.04%

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 195775 1496.68 654 644 130.4
A 7 192 15439 113.48 654 644 130.4
A 13 6 12819 93.38 654 644 130.4
B 5 200 1705807 14515.77 625 611 117.5
B 5 255 153569 1302.08 625 611 117.5
B 0 219 20114 166.02 625 611 117.5
C 0 10 509909 3598.51 618 624 141.5
C 15 214 210957 1486.17 618 624 141.5
C 14 254 79874 559.97 618 624 141.5
D 12 235 1433772 9434.06 626 612 151.9
D 2 153 99589 651.54 626 612 151.9
D 2 249 96447 630.85 626 612 151.9

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