ASTROSAT CZTI

Data Quality Report

Orbit 01137

Creation date: 2024-06-27T14:08:05.964728
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/AS1P01_997T03_9000000216_01137cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01137cztM0_level2_quad_clean.evt
Size (bytes)371,900,16036,486,720
Size354.7 MB 34.8 MB
Events in quadrant A2,692,280233,912
Events in quadrant B2,928,695231,456
Events in quadrant C2,897,331230,268
Events in quadrant D2,574,865228,001

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0983920
B01051824
C01043520
D0948920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A251910.039698%
B251950.198491%
C251900.000000%
D2519341.349742%

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 2519 2519 21 21 0.83% 0.83%
B 2519 2519 50 50 1.98% 1.98%
C 2520 2520 23 23 0.91% 0.91%
D 2519 2519 71 71 2.82% 2.82%

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 14 238 13836 77.16 696 700 170.2
A 0 175 4617 23.01 696 700 170.2
A 3 111 2330 9.57 696 700 170.2
B 14 3 39976 221.24 753 755 177.3
B 15 22 12895 68.48 753 755 177.3
B 4 222 5859 28.79 753 755 177.3
C 15 241 113810 572.56 701 726 197.5
C 0 236 29114 143.73 701 726 197.5
C 3 111 8051 37.08 701 726 197.5
D 2 16 150092 753.25 641 657 198.4
D 2 63 11310 53.7 641 657 198.4
D 13 169 6358 28.74 641 657 198.4

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