ASTROSAT CZTI

Data Quality Report

Orbit 27193

Creation date: 2024-06-27T19:37:33.564556
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_243T01_9000003918_27193cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27193cztM0_level2_quad_clean.evt
Size (bytes)1,801,995,840291,176,640
Size1.7 GB 277.7 MB
Events in quadrant A11,182,3611,861,107
Events in quadrant B14,228,1831,868,747
Events in quadrant C11,959,7191,804,948
Events in quadrant D15,666,6571,716,768

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0474290
B0565370
C0500070
D0616770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227732871.260264%
B2277315596.845826%
C227736512.858648%
D2277213816.064465%

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 25538 22777 11 11 0.04% 0.05%
B 25538 22777 850 850 3.33% 3.73%
C 25538 22777 163 163 0.64% 0.72%
D 25538 22777 992 992 3.88% 4.36%

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 6 16 228867 402.88 2813 2760 561.2
A 14 235 38088 62.95 2813 2760 561.2
A 13 254 33218 54.27 2813 2760 561.2
B 3 64 3398101 6536.25 2713 2645 519.5
B 12 111 65211 120.44 2713 2645 519.5
B 0 190 64306 118.7 2713 2645 519.5
C 15 208 1079643 1722.81 2671 2687 625.1
C 14 238 424415 674.64 2671 2687 625.1
C 2 16 44648 67.13 2671 2687 625.1
D 1 52 3595326 5217.83 2631 2585 688.6
D 12 0 675946 977.94 2631 2585 688.6
D 2 250 626344 905.9 2631 2585 688.6

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