ASTROSAT CZTI

Data Quality Report

Orbit 18995

Creation date: 2024-06-27T17:57:46.517390
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/AS1A05_132T01_9000002828_18995cztM0_level2.evt modeM0/AS1A05_132T01_9000002828_18995cztM0_level2_quad_clean.evt
Size (bytes)680,420,16088,865,280
Size648.9 MB 84.7 MB
Events in quadrant A4,403,772548,242
Events in quadrant B3,877,347559,544
Events in quadrant C5,089,835537,346
Events in quadrant D6,726,194521,440

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179961
B0161792
C0204001
D0252371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75274505.978477%
B75272713.600372%
C75273034.025508%
D75276688.874718%

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 7557 7528 125 125 1.65% 1.66%
B 7557 7528 10 10 0.13% 0.13%
C 7557 7528 1 1 0.01% 0.01%
D 7557 7528 327 327 4.33% 4.34%

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 14 235 784971 4131.35 931 910 189.8
A 0 13 12014 58.51 931 910 189.8
A 9 143 10533 50.71 931 910 189.8
B 3 112 99380 545.4 930 904 180.6
B 0 189 38148 206.27 930 904 180.6
B 7 220 30186 162.18 930 904 180.6
C 3 233 1428524 6760.11 898 905 211.2
C 14 238 136819 643.58 898 905 211.2
C 8 128 12732 56.0 898 905 211.2
D 1 52 1620132 7247.53 903 875 223.4
D 7 238 1600930 7161.59 903 875 223.4
D 7 38 38859 170.01 903 875 223.4

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