ASTROSAT CZTI

Data Quality Report

Orbit 18604

Creation date: 2024-06-27T17:52:13.576877
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/AS1A05_104T03_9000002770_18604cztM0_level2.evt modeM0/AS1A05_104T03_9000002770_18604cztM0_level2_quad_clean.evt
Size (bytes)602,372,160117,849,600
Size574.5 MB 112.4 MB
Events in quadrant A4,043,208751,791
Events in quadrant B4,199,965770,809
Events in quadrant C4,300,449747,125
Events in quadrant D5,130,536716,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176762
B0180552
C0182332
D0210242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83751551.850746%
B83752272.710448%
C83752452.925373%
D83753654.358209%

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 8930 8376 0 0 0.00% 0.00%
B 8930 8376 6 6 0.07% 0.07%
C 8930 8377 2 2 0.02% 0.02%
D 8930 8377 224 224 2.51% 2.67%

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 13 254 12502 53.48 1044 1020 214.7
A 0 226 9030 37.31 1044 1020 214.7
A 15 192 8886 36.64 1044 1020 214.7
B 12 111 25771 121.81 1047 1018 203.2
B 4 173 22856 107.46 1047 1018 203.2
B 0 229 22118 103.83 1047 1018 203.2
C 3 233 175150 726.62 1010 1018 239.6
C 14 238 155208 643.4 1010 1018 239.6
C 9 54 24974 99.96 1010 1018 239.6
D 1 52 1205310 4862.35 1008 978 247.7
D 7 238 80173 319.74 1008 978 247.7
D 2 234 34684 136.08 1008 978 247.7

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