ASTROSAT CZTI

Data Quality Report

Orbit 34597

Creation date: 2022-02-20T18:04:04.179342
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_014T01_9000004950_34597cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34597cztM0_level2_quad_clean.evt
Size (bytes)514,022,400101,724,480
Size490.2 MB 97.0 MB
Events in quadrant A2,599,045717,543
Events in quadrant B3,229,384704,634
Events in quadrant C2,813,162692,337
Events in quadrant D6,596,032624,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105253
B0124822
C0111622
D0230222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487390.184691%
B48732244.596758%
C4873390.800328%
D48733366.895136%

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 7025 4874 0 0 0.00% 0.00%
B 7025 4874 147 147 2.09% 3.02%
C 7025 4874 27 27 0.38% 0.55%
D 7025 4874 433 433 6.16% 8.88%

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 42839 319.57 656 647 132.0
A 9 143 18722 136.9 656 647 132.0
A 13 254 8634 60.49 656 647 132.0
B 5 172 633713 5266.71 634 622 120.2
B 0 189 23121 187.17 634 622 120.2
B 5 255 15482 123.62 634 622 120.2
C 15 214 210632 1468.77 618 626 143.0
C 0 10 118255 822.69 618 626 143.0
C 14 67 30002 205.45 618 626 143.0
D 8 195 3609109 23576.43 616 601 153.1
D 2 249 120496 783.34 616 601 153.1
D 13 249 118982 773.45 616 601 153.1

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