ASTROSAT CZTI

Data Quality Report

Orbit 25536

Creation date: 2024-06-27T19:18:46.170624
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/AS1A07_147T01_9000003722_25536cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25536cztM0_level2_quad_clean.evt
Size (bytes)501,912,00089,418,240
Size478.7 MB 85.3 MB
Events in quadrant A3,410,232578,023
Events in quadrant B3,429,047584,515
Events in quadrant C3,400,266541,942
Events in quadrant D4,505,298535,712

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139370
B0140330
C0139810
D0175210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67081492.221228%
B67091632.429572%
C67091812.697869%
D67092824.203309%

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 7538 6709 0 0 0.00% 0.00%
B 7539 6710 0 0 0.00% 0.00%
C 7539 6710 0 0 0.00% 0.00%
D 7539 6710 167 167 2.22% 2.49%

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 10543 54.75 884 868 176.7
A 3 137 8006 40.4 884 868 176.7
A 0 226 7583 38.0 884 868 176.7
B 12 111 20272 115.78 871 848 167.8
B 11 111 18586 105.73 871 848 167.8
B 14 111 16837 95.3 871 848 167.8
C 14 238 132094 675.06 831 835 194.4
C 2 16 15927 77.62 831 835 194.4
C 14 225 7942 36.55 831 835 194.4
D 1 52 944474 4315.35 819 800 218.7
D 8 195 429264 1959.33 819 800 218.7
D 2 234 25168 111.43 819 800 218.7

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