ASTROSAT CZTI

Data Quality Report

Orbit 27941

Creation date: 2024-06-27T19:46:15.144745
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_016T01_9000004034_27941cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27941cztM0_level2_quad_clean.evt
Size (bytes)649,823,04086,120,640
Size619.7 MB 82.1 MB
Events in quadrant A3,947,497529,979
Events in quadrant B4,178,036529,818
Events in quadrant C4,090,745511,387
Events in quadrant D6,929,990489,114

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166550
B0173830
C0169880
D0261090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78811892.398173%
B78802763.502538%
C78813043.857379%
D788094411.979695%

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 8316 7883 0 0 0.00% 0.00%
B 8316 7882 14 14 0.17% 0.18%
C 8316 7883 1 1 0.01% 0.01%
D 8316 7883 547 547 6.58% 6.94%

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 13 254 12913 57.32 1021 999 207.9
A 3 137 10111 43.84 1021 999 207.9
A 0 226 8948 38.24 1021 999 207.9
B 10 245 67059 342.99 1006 982 192.6
B 0 230 53341 271.78 1006 982 192.6
B 15 32 39681 200.88 1006 982 192.6
C 14 238 155261 672.33 973 976 229.5
C 3 233 79205 340.9 973 976 229.5
C 2 16 60230 258.21 973 976 229.5
D 1 52 1907448 8354.31 947 919 228.2
D 8 195 777097 3401.17 947 919 228.2
D 2 250 457182 1999.32 947 919 228.2

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