ASTROSAT CZTI

Data Quality Report

Orbit 38288

Creation date: 2024-06-27T21:50:47.038633
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/AS1A07_145T01_9000005370_38288cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38288cztM0_level2_quad_clean.evt
Size (bytes)489,165,12088,119,360
Size466.5 MB 84.0 MB
Events in quadrant A2,886,914634,634
Events in quadrant B2,721,040661,130
Events in quadrant C2,927,047631,653
Events in quadrant D9,185,027391,144

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116233
B0112072
C0115812
D0307252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4990150.300601%
B4990260.521042%
C4990571.142285%
D4990188237.715431%

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 7084 4991 8 8 0.11% 0.16%
B 7084 4991 11 11 0.16% 0.22%
C 7084 4991 42 42 0.59% 0.84%
D 7084 4991 1884 1884 26.60% 37.75%

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 10 83 375804 3149.85 589 579 119.1
A 12 16 142568 1191.94 589 579 119.1
A 9 143 36449 301.11 589 579 119.1
B 5 184 134398 1185.7 595 581 112.9
B 0 229 115990 1022.59 595 581 112.9
B 5 172 43910 383.92 595 581 112.9
C 15 214 211839 1542.36 591 596 137.0
C 14 254 145768 1059.95 591 596 137.0
C 15 208 119176 865.79 591 596 137.0
D 10 203 3947793 32834.49 492 479 120.2
D 1 47 1918082 15950.98 492 479 120.2
D 2 16 495912 4121.1 492 479 120.2

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