ASTROSAT CZTI

Data Quality Report

Orbit 37895

Creation date: 2024-06-27T21:45:49.295601
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/AS1T05_059T01_9000005354_37895cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37895cztM0_level2_quad_clean.evt
Size (bytes)437,054,40065,030,400
Size416.8 MB 62.0 MB
Events in quadrant A3,088,603412,747
Events in quadrant B2,659,863421,969
Events in quadrant C3,145,546407,777
Events in quadrant D3,993,603366,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124293
B0110472
C0124322
D0152662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5140190.369650%
B5140320.622568%
C5140841.634241%
D51401963.813230%

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 7023 5141 3 3 0.04% 0.06%
B 7023 5141 19 19 0.27% 0.37%
C 7023 5141 57 57 0.81% 1.11%
D 7023 5141 172 172 2.45% 3.35%

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 10 83 352470 2820.25 621 611 124.8
A 15 222 296945 2375.2 621 611 124.8
A 13 6 15836 122.03 621 611 124.8
B 5 172 105946 905.83 614 602 116.3
B 0 213 57812 491.94 614 602 116.3
B 0 229 32211 271.8 614 602 116.3
C 14 254 432325 3117.47 602 607 138.5
C 15 214 220691 1589.24 602 607 138.5
C 0 10 128536 923.78 602 607 138.5
D 1 52 436047 2942.96 600 584 148.0
D 9 49 378861 2556.49 600 584 148.0
D 2 249 326536 2202.86 600 584 148.0

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