ASTROSAT CZTI

Data Quality Report

Orbit 27713

Creation date: 2024-06-27T19:43:25.608636
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_262T01_9000003988_27713cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27713cztM0_level2_quad_clean.evt
Size (bytes)1,288,270,080240,543,360
Size1.2 GB 229.4 MB
Events in quadrant A8,777,2891,531,770
Events in quadrant B9,255,5741,538,491
Events in quadrant C9,109,0711,484,193
Events in quadrant D10,601,0261,434,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382630
B0390840
C0386520
D0443940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188052811.494283%
B188053261.733581%
C188053701.967562%
D188055693.025791%

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 20400 18805 0 0 0.00% 0.00%
B 20400 18805 12 12 0.06% 0.06%
C 20400 18805 0 0 0.00% 0.00%
D 20400 18805 353 353 1.73% 1.88%

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 6 16 45616 95.71 2260 2208 453.6
A 13 254 28322 57.58 2260 2208 453.6
A 3 137 22750 45.29 2260 2208 453.6
B 3 112 173076 398.65 2240 2181 428.7
B 15 32 98869 225.55 2240 2181 428.7
B 0 230 77167 174.92 2240 2181 428.7
C 14 238 344693 672.76 2174 2181 509.1
C 3 233 190705 370.3 2174 2181 509.1
C 15 208 45526 85.14 2174 2181 509.1
D 1 52 1734027 3322.34 2177 2114 521.3
D 11 176 331419 631.71 2177 2114 521.3
D 2 250 221346 420.55 2177 2114 521.3

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