ASTROSAT CZTI

Data Quality Report

Orbit 18189

Creation date: 2024-06-27T17:46:28.740140
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_160T02_9000002710_18189cztM0_level2.evt modeM0/AS1A05_160T02_9000002710_18189cztM0_level2_quad_clean.evt
Size (bytes)1,223,709,120203,198,400
Size1.1 GB 193.8 MB
Events in quadrant A7,652,0281,263,803
Events in quadrant B7,992,6001,285,805
Events in quadrant C9,373,0461,246,791
Events in quadrant D10,919,1641,211,646

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339913
B0347713
C0390193
D0437643

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166081100.662331%
B166091500.903125%
C166096403.853333%
D166095983.600458%

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 18943 16611 1 1 0.01% 0.01%
B 18944 16612 11 11 0.06% 0.07%
C 18944 16612 201 201 1.06% 1.21%
D 18944 16612 428 428 2.26% 2.58%

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 4 2 39062 93.12 1977 1932 398.7
A 15 174 17939 40.14 1977 1932 398.7
A 0 226 17011 37.82 1977 1932 398.7
B 0 229 90856 235.84 1970 1919 377.1
B 12 111 45652 115.97 1970 1919 377.1
B 0 189 44455 112.79 1970 1919 377.1
C 4 254 1776342 4044.92 1872 1882 438.7
C 14 238 290224 657.28 1872 1882 438.7
C 13 61 13301 26.03 1872 1882 438.7
D 7 238 1521518 3296.72 1899 1844 461.0
D 5 222 1041534 2255.46 1899 1844 461.0
D 8 230 619877 1340.73 1899 1844 461.0

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