ASTROSAT CZTI

Data Quality Report

Orbit 09836

Creation date: 2024-06-27T15:51:12.047831
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/AS1G07_020T01_9000001398_09836cztM0_level2.evt modeM0/AS1G07_020T01_9000001398_09836cztM0_level2_quad_clean.evt
Size (bytes)1,324,632,960236,252,160
Size1.2 GB 225.3 MB
Events in quadrant A8,692,3551,479,516
Events in quadrant B9,518,9421,493,089
Events in quadrant C8,799,0011,481,011
Events in quadrant D11,822,0841,393,465

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03894925
B04084937
C03959227
D04828449

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189873211.690630%
B189823721.959751%
C189872411.269290%
D189848374.408976%

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 21107 19001 0 0 0.00% 0.00%
B 21107 19001 34 34 0.16% 0.18%
C 21107 19001 31 31 0.15% 0.16%
D 21107 19001 582 582 2.76% 3.06%

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 8 15 31872 65.49 2237 2184 453.3
A 0 226 20701 40.85 2237 2184 453.3
A 15 174 19268 37.69 2237 2184 453.3
B 0 214 180626 415.41 2248 2191 429.5
B 4 239 126790 290.08 2248 2191 429.5
B 0 85 119329 272.71 2248 2191 429.5
C 10 22 276880 546.32 2173 2184 502.8
C 14 234 25822 47.01 2173 2184 502.8
C 13 61 16412 28.3 2173 2184 502.8
D 2 136 1479934 2833.57 2138 2083 521.6
D 1 52 906492 1734.07 2138 2083 521.6
D 2 152 484663 925.28 2138 2083 521.6

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