ASTROSAT CZTI

Data Quality Report

Orbit 09011

Creation date: 2024-06-27T15:40:04.757640
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/AS1C02_037T01_9000001252_09011cztM0_level2.evt modeM0/AS1C02_037T01_9000001252_09011cztM0_level2_quad_clean.evt
Size (bytes)1,701,979,200203,886,720
Size1.6 GB 194.4 MB
Events in quadrant A14,338,7571,247,811
Events in quadrant B10,631,7321,267,934
Events in quadrant C8,122,2971,276,603
Events in quadrant D17,209,6651,110,857

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05478530
B04388025
C03737617
D06384349

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184419224.999729%
B184416643.600672%
C18445540.292762%
D18439255213.840230%

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 20447 18456 550 550 2.69% 2.98%
B 20447 18455 410 410 2.01% 2.22%
C 20447 18456 0 0 0.00% 0.00%
D 20447 18456 2318 2318 11.34% 12.56%

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 8 5 5844418 13542.21 2114 2064 431.4
A 15 174 173507 397.39 2114 2064 431.4
A 13 251 73767 166.2 2114 2064 431.4
B 10 16 1211722 2955.93 2135 2086 409.2
B 4 48 585050 1424.56 2135 2086 409.2
B 0 230 269722 654.01 2135 2086 409.2
C 13 61 16131 28.99 2080 2091 484.3
C 8 128 7151 10.45 2080 2091 484.3
C 3 202 5249 6.52 2080 2091 484.3
D 1 52 8016691 17198.38 1901 1840 466.0
D 6 225 1206630 2585.26 1901 1840 466.0
D 7 71 305123 650.79 1901 1840 466.0

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