ASTROSAT CZTI

Data Quality Report

Orbit 32280

Creation date: 2024-06-27T20:38:24.488100
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/AS1A09_131T01_9000004696_32280cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32280cztM0_level2_quad_clean.evt
Size (bytes)607,849,920132,986,880
Size579.7 MB 126.8 MB
Events in quadrant A3,161,224909,852
Events in quadrant B5,361,406926,918
Events in quadrant C3,711,274915,069
Events in quadrant D5,757,808845,019

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133413
B0203302
C0150822
D0213902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172570.923526%
B61722263.661698%
C61722844.601426%
D61724817.793260%

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 7502 6173 3 3 0.04% 0.05%
B 7502 6173 26 26 0.35% 0.42%
C 7502 6173 45 45 0.60% 0.73%
D 7502 6173 256 256 3.41% 4.15%

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 6 32545 201.52 801 789 157.6
A 0 6 30363 187.67 801 789 157.6
A 13 254 12554 74.66 801 789 157.6
B 6 159 1804736 12228.71 803 785 147.5
B 0 190 194708 1314.57 803 785 147.5
B 5 172 73947 495.95 803 785 147.5
C 0 10 193085 1070.12 785 792 179.7
C 3 233 171608 950.6 785 792 179.7
C 14 238 146544 811.11 785 792 179.7
D 8 195 2182402 12017.35 767 746 181.5
D 13 249 453156 2492.04 767 746 181.5
D 7 38 91083 497.61 767 746 181.5

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