ASTROSAT CZTI

Data Quality Report

Orbit 46001

Creation date: 2024-06-27T23:18:37.495181
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_012T08_9000006150_46001cztM0_level2.fits modeM0/AS1A13_012T08_9000006150_46001cztM0_level2_quad_clean.evt
Size (bytes)624,683,520128,908,800
Size595.7 MB 122.9 MB
Events in quadrant A6,671,955861,446
Events in quadrant B7,261,532847,254
Events in quadrant C3,704,902852,488
Events in quadrant D4,851,215772,541

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251400
B0274500
C0171410
D0202490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8192540.659180%
B81925917.214355%
C8192430.524902%
D81921642.001953%

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 8192 8192 0 0 0.00% 0.00%
B 8192 8192 347 347 4.24% 4.24%
C 8192 8192 38 38 0.46% 0.46%
D 8192 8192 127 127 1.55% 1.55%

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 3069658 16152.48 911 889 190.0
A 2 79 71183 369.99 911 889 190.0
A 13 254 12106 59.04 911 889 190.0
B 3 112 3666955 20896.73 890 862 175.4
B 12 111 23093 126.72 890 862 175.4
B 11 111 21383 116.97 890 862 175.4
C 12 2 199615 939.8 895 896 211.4
C 12 249 14370 63.72 895 896 211.4
C 13 61 6056 24.4 895 896 211.4
D 1 52 1085708 4916.86 886 860 220.6
D 12 2 107239 482.14 886 860 220.6
D 2 249 89355 401.09 886 860 220.6

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