ASTROSAT CZTI

Data Quality Report

Orbit 48202

Creation date: 2024-08-27T13:33:31.207210
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_037T05_9000006414_48202cztM0_level2.fits modeM0/AS1A13_037T05_9000006414_48202cztM0_level2_quad_clean.evt
Size (bytes)400,674,24074,350,080
Size382.1 MB 70.9 MB
Events in quadrant A6,330,951637,366
Events in quadrant B967,78739,344
Events in quadrant C2,695,127621,525
Events in quadrant D4,388,645551,701

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228431
B060021
C0122151
D0170121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56953005.267779%
B5696569599.982444%
C5696270.474017%
D56964618.093399%

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 6705 5696 77 77 1.15% 1.35%
B 6705 5695 0 0 0.00% 0.00%
C 6706 5697 17 17 0.25% 0.30%
D 6706 5697 444 444 6.62% 7.79%

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 3821650 28450.69 640 625 134.3
A 0 31 17544 125.98 640 625 134.3
A 13 254 12238 86.47 640 625 134.3
B 2 177 788955 76135.34 40 39 10.4
B 0 200 9065 871.07 40 39 10.4
B 4 21 2957 281.61 40 39 10.4
C 12 2 183050 1229.32 628 632 148.4
C 11 16 16556 107.31 628 632 148.4
C 4 0 12594 80.61 628 632 148.4
D 2 165 1566243 10082.28 610 592 155.3
D 12 233 284013 1825.14 610 592 155.3
D 11 224 73293 468.17 610 592 155.3

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