ASTROSAT CZTI

Data Quality Report

Orbit 21445

Creation date: 2024-06-27T18:27:53.469707
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/AS1T03_140T01_9000003160_21445cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21445cztM0_level2_quad_clean.evt
Size (bytes)1,393,701,120224,591,040
Size1.3 GB 214.2 MB
Events in quadrant A8,558,3191,419,851
Events in quadrant B8,853,5691,438,202
Events in quadrant C9,058,3621,382,027
Events in quadrant D14,491,9161,290,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03782
B03782
C03782
D03782

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03772891
B03834293
C03884784
D055722108

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18461520.281675%
B184591140.617585%
C184611800.975028%
D184599695.249472%

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 20932 18467 0 0 0.00% 0.00%
B 20932 18463 9 9 0.04% 0.05%
C 20933 18464 5 5 0.02% 0.03%
D 20932 18461 831 831 3.97% 4.50%

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 11 47 45750 98.88 2202 2155 440.9
A 13 254 30602 64.52 2202 2155 440.9
A 0 226 19138 38.52 2202 2155 440.9
B 0 230 56197 129.4 2199 2142 417.7
B 0 189 51293 117.66 2199 2142 417.7
B 12 111 51246 117.55 2199 2142 417.7
C 3 233 481866 974.98 2105 2122 492.1
C 14 238 331836 670.08 2105 2122 492.1
C 7 239 26025 48.58 2105 2122 492.1
D 12 235 3285019 6451.01 2093 2032 508.9
D 1 20 1323654 2596.96 2093 2032 508.9
D 1 52 680106 1332.4 2093 2032 508.9

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