ASTROSAT CZTI

Data Quality Report

Orbit 39799

Creation date: 2024-06-27T22:09:06.660980
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/AS1A12_022T01_9000005498_39799cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39799cztM0_level2_quad_clean.evt
Size (bytes)546,076,80079,948,800
Size520.8 MB 76.2 MB
Events in quadrant A4,113,331583,043
Events in quadrant B3,147,901612,592
Events in quadrant C9,092,636302,508
Events in quadrant D3,437,727539,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215395825
B0195316317
C04761617148
D0207006489

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0572
B0564
C0617
D0563

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016238
B016539
C016438
D016145

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55372474.460899%
B55661342.407474%
C5008245649.041534%
D56051783.175736%

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 25537 5983 237 237 0.93% 3.96%
B 25520 5942 69 69 0.27% 1.16%
C 25481 5441 2061 2061 8.09% 37.88%
D 25463 6031 142 142 0.56% 2.35%

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 9 143 1110191 8890.64 606 593 124.8
A 10 83 528285 4228.12 606 593 124.8
A 13 248 88104 701.18 606 593 124.8
B 4 170 282434 2399.71 607 590 117.4
B 5 255 255164 2167.53 607 590 117.4
B 4 171 90956 769.41 607 590 117.4
C 9 187 6352456 61479.54 440 443 103.3
C 15 208 758262 7334.74 440 443 103.3
C 15 214 177258 1711.35 440 443 103.3
D 12 227 306882 2065.09 600 583 148.3
D 13 249 283002 1904.09 600 583 148.3
D 2 249 217132 1459.99 600 583 148.3

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