ASTROSAT CZTI

Data Quality Report

Orbit 35280

Creation date: 2024-06-27T21:11:28.821225
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/AS1A11_082T01_9000005056_35280cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35280cztM0_level2_quad_clean.evt
Size (bytes)708,716,16064,010,880
Size675.9 MB 61.0 MB
Events in quadrant A2,685,858410,519
Events in quadrant B8,165,610375,322
Events in quadrant C6,037,082372,043
Events in quadrant D4,191,781382,916

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116513
B0281912
C0219362
D0160212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5680100.176056%
B5680202735.686620%
C568067011.795775%
D56804648.169014%

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 7263 5681 2 2 0.03% 0.04%
B 7263 5681 1651 1651 22.73% 29.06%
C 7263 5681 610 610 8.40% 10.74%
D 7263 5681 448 448 6.17% 7.89%

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 104093 772.13 658 644 134.0
A 7 191 20892 151.13 658 644 134.0
A 13 6 10911 76.63 658 644 134.0
B 5 236 3347598 31747.98 553 539 105.4
B 5 172 2583015 24495.66 553 539 105.4
B 0 189 25356 235.4 553 539 105.4
C 0 10 1721136 12195.59 607 611 141.1
C 4 254 1631494 11560.18 607 611 141.1
C 15 214 226634 1602.12 607 611 141.1
D 14 52 505547 3348.48 618 600 150.8
D 12 227 263076 1740.57 618 600 150.8
D 2 250 240355 1589.9 618 600 150.8

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