ASTROSAT CZTI

Data Quality Report

Orbit 33702

Creation date: 2024-06-27T20:51:41.946023
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/AS1T04_090T01_9000004812_33702cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33702cztM0_level2_quad_clean.evt
Size (bytes)774,178,56088,053,120
Size738.3 MB 84.0 MB
Events in quadrant A9,304,980533,947
Events in quadrant B4,756,078577,638
Events in quadrant C3,040,946606,208
Events in quadrant D5,969,468558,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315283
B0178792
C0123472
D0216342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5570201736.211849%
B557059910.754039%
C5570821.472172%
D55705079.102334%

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 7153 5569 1946 1946 27.21% 34.94%
B 7153 5570 504 504 7.05% 9.05%
C 7153 5570 64 64 0.89% 1.15%
D 7153 5570 463 463 6.47% 8.31%

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 15 169 6927960 60671.66 570 557 114.2
A 15 237 144542 1261.05 570 557 114.2
A 14 4 15042 126.86 570 557 114.2
B 5 172 2003969 17121.35 617 601 117.0
B 5 255 151569 1290.22 617 601 117.0
B 0 213 42007 353.87 617 601 117.0
C 15 214 255596 1753.24 625 629 145.4
C 0 10 203574 1395.52 625 629 145.4
C 3 233 74065 504.97 625 629 145.4
D 8 195 1745192 10964.93 601 588 159.1
D 7 80 1106658 6951.71 601 588 159.1
D 2 250 270986 1699.47 601 588 159.1

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