ASTROSAT CZTI

Data Quality Report

Orbit 38684

Creation date: 2024-06-27T21:55:05.881887
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/AS1A12_054T01_9000005392_38684cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38684cztM0_level2_quad_clean.evt
Size (bytes)428,676,48095,040,000
Size408.8 MB 90.6 MB
Events in quadrant A3,157,873657,959
Events in quadrant B2,940,131668,881
Events in quadrant C2,837,929631,044
Events in quadrant D6,476,168509,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128783
B0125932
C0119972
D0233062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5865350.596760%
B5865300.511509%
C5865130.221654%
D586593515.942029%

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 7177 5866 22 22 0.31% 0.38%
B 7177 5866 10 10 0.14% 0.17%
C 7177 5866 7 7 0.10% 0.12%
D 7177 5866 896 896 12.48% 15.27%

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 428685 3166.54 663 649 135.2
A 13 248 89776 659.35 663 649 135.2
A 15 174 69849 511.93 663 649 135.2
B 4 251 169208 1314.73 658 641 128.2
B 4 171 86843 672.33 658 641 128.2
B 5 184 71926 555.98 658 641 128.2
C 15 214 237739 1561.49 645 649 151.8
C 14 254 44241 287.1 645 649 151.8
C 5 237 22085 141.18 645 649 151.8
D 12 227 3228668 21900.61 591 571 147.4
D 2 16 247753 1676.97 591 571 147.4
D 14 52 142584 963.47 591 571 147.4

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