ASTROSAT CZTI

Data Quality Report

Orbit 27129

Creation date: 2024-06-27T19:36:49.582455
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_244T01_9000003912_27129cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27129cztM0_level2_quad_clean.evt
Size (bytes)566,161,92095,094,720
Size539.9 MB 90.7 MB
Events in quadrant A4,035,759615,342
Events in quadrant B3,512,272631,952
Events in quadrant C3,394,604605,558
Events in quadrant D5,735,494545,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163950
B0146870
C0145180
D0218110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6899440.637774%
B6899370.536310%
C6899630.913176%
D689978311.349471%

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 7574 6900 27 27 0.36% 0.39%
B 7574 6900 11 11 0.15% 0.16%
C 7574 6900 2 2 0.03% 0.03%
D 7574 6900 673 673 8.89% 9.75%

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 14 235 456595 2740.37 830 810 166.3
A 6 16 341230 2046.75 830 810 166.3
A 8 192 17143 98.2 830 810 166.3
B 3 64 91983 571.05 834 812 159.7
B 3 112 84833 526.27 834 812 159.7
B 10 245 24810 150.31 834 812 159.7
C 14 238 128638 671.9 810 816 190.2
C 3 233 47747 246.7 810 816 190.2
C 15 208 22625 114.64 810 816 190.2
D 1 52 2416231 12069.93 768 752 200.1
D 7 38 193144 961.37 768 752 200.1
D 2 250 171265 852.04 768 752 200.1

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