ASTROSAT CZTI

Data Quality Report

Orbit 38638

Creation date: 2024-06-27T21:54:28.431508
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_061T03_9000005390_38638cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38638cztM0_level2_quad_clean.evt
Size (bytes)327,689,28088,920,000
Size312.5 MB 84.8 MB
Events in quadrant A3,100,193595,279
Events in quadrant B2,889,173608,003
Events in quadrant C2,860,472590,034
Events in quadrant D2,887,628545,708

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121733
B0116082
C0114102
D0116992

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5042631.249504%
B50421102.181674%
C5042531.051170%
D5042450.892503%

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 7045 5043 48 48 0.68% 0.95%
B 7045 5043 71 71 1.01% 1.41%
C 7045 5043 49 49 0.70% 0.97%
D 7045 5043 33 33 0.47% 0.65%

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 402725 3348.57 592 581 120.1
A 13 248 250946 2084.74 592 581 120.1
A 15 174 48626 400.06 592 581 120.1
B 4 171 301841 2665.9 585 570 113.0
B 5 184 91990 808.96 585 570 113.0
B 0 155 48579 424.82 585 570 113.0
C 15 214 205218 1501.58 580 585 136.3
C 3 110 171197 1251.93 580 585 136.3
C 15 159 80417 585.8 580 585 136.3
D 12 233 135538 938.76 585 568 143.8
D 13 249 85178 588.49 585 568 143.8
D 2 16 68460 472.21 585 568 143.8

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