ASTROSAT CZTI

Data Quality Report

Orbit 28447

Creation date: 2024-06-27T19:51:50.204331
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/AS1A10_101T21_9000004090_28447cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28447cztM0_level2_quad_clean.evt
Size (bytes)567,659,520134,910,720
Size541.4 MB 128.7 MB
Events in quadrant A3,492,893906,032
Events in quadrant B3,637,020924,206
Events in quadrant C3,652,310895,096
Events in quadrant D5,902,048840,352

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155070
B0157340
C0158850
D0228270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7477330.441353%
B7477420.561723%
C74771471.966029%
D74775517.369266%

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 7932 7478 10 10 0.13% 0.13%
B 7932 7478 1 1 0.01% 0.01%
C 7932 7478 49 49 0.62% 0.66%
D 7932 7478 499 499 6.29% 6.67%

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 15 174 81096 454.31 878 858 176.6
A 15 169 12424 65.49 878 858 176.6
A 13 254 12348 65.06 878 858 176.6
B 10 245 87831 520.33 879 856 167.2
B 0 230 25995 150.4 879 856 167.2
B 10 246 25978 150.29 879 856 167.2
C 7 220 184195 924.41 852 859 198.3
C 14 238 139315 698.12 852 859 198.3
C 3 233 10886 50.56 852 859 198.3
D 1 52 2208206 11066.11 831 808 199.5
D 2 250 356305 1782.17 831 808 199.5
D 8 195 145938 727.56 831 808 199.5

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