ASTROSAT CZTI

Data Quality Report

Orbit 34759

Creation date: 2022-03-03T17:13:46.568395
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/AS1C07_004T01_9000004990_34759cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34759cztM0_level2_quad_clean.evt
Size (bytes)464,857,92082,031,040
Size443.3 MB 78.2 MB
Events in quadrant A2,692,996526,626
Events in quadrant B2,930,644537,818
Events in quadrant C2,993,609540,092
Events in quadrant D5,081,270487,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115862
B0120421
C0121051
D0191101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5603330.588970%
B5603470.838836%
C5603460.820989%
D56033676.550062%

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 7156 5604 19 19 0.27% 0.34%
B 7156 5604 25 25 0.35% 0.45%
C 7156 5604 27 27 0.38% 0.48%
D 7156 5604 326 326 4.56% 5.82%

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 49697 363.79 658 646 134.8
A 15 169 48017 351.33 658 646 134.8
A 15 174 18340 131.23 658 646 134.8
B 0 190 124547 983.5 658 641 126.0
B 5 172 74412 585.55 658 641 126.0
B 5 255 56283 441.65 658 641 126.0
C 15 214 241164 1602.73 643 647 150.1
C 0 10 174316 1157.28 643 647 150.1
C 14 67 52285 344.1 643 647 150.1
D 2 250 1404241 9138.25 627 609 153.6
D 8 195 809282 5264.81 627 609 153.6
D 2 249 131242 850.47 627 609 153.6

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