ASTROSAT CZTI

Data Quality Report

Orbit 18495

Creation date: 2024-06-27T17:50:45.798931
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/AS1T03_083T01_9000002742_18495cztM0_level2.evt modeM0/AS1T03_083T01_9000002742_18495cztM0_level2_quad_clean.evt
Size (bytes)438,488,640119,260,800
Size418.2 MB 113.7 MB
Events in quadrant A3,471,104812,827
Events in quadrant B3,165,391824,938
Events in quadrant C3,023,476779,774
Events in quadrant D3,195,853759,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143741
B0134721
C0130401
D0137061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62361201.924310%
B6237580.929934%
C6237791.266635%
D6237691.106301%

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 7351 6236 33 33 0.45% 0.53%
B 7352 6237 7 7 0.10% 0.11%
C 7352 6237 0 0 0.00% 0.00%
D 7352 6237 33 33 0.45% 0.53%

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 0 13 453777 2902.14 779 765 156.1
A 15 192 12746 76.75 779 765 156.1
A 13 254 8143 47.27 779 765 156.1
B 10 245 29354 192.71 778 761 148.4
B 0 245 24405 159.36 778 761 148.4
B 7 220 23300 151.91 778 761 148.4
C 14 238 117285 679.6 738 744 171.5
C 3 233 22543 127.12 738 744 171.5
C 13 61 5312 26.64 738 744 171.5
D 7 238 211292 1172.9 745 724 179.5
D 12 110 67127 369.87 745 724 179.5
D 1 52 52468 288.22 745 724 179.5

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