ASTROSAT CZTI

Data Quality Report

Orbit 08491

Creation date: 2024-06-27T15:33:25.660673
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/AS1C02_033T02_9000001198_08491cztM0_level2.evt modeM0/AS1C02_033T02_9000001198_08491cztM0_level2_quad_clean.evt
Size (bytes)423,691,20088,839,360
Size404.1 MB 84.7 MB
Events in quadrant A3,100,022565,417
Events in quadrant B3,200,984564,522
Events in quadrant C3,013,110551,351
Events in quadrant D3,060,846541,268

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139502
B0141081
C0137441
D0140301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6717460.684830%
B6717480.714605%
C6717310.461516%
D6717430.640167%

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 7662 6718 3 3 0.04% 0.04%
B 7662 6718 2 2 0.03% 0.03%
C 7662 6718 0 0 0.00% 0.00%
D 7662 6718 6 6 0.08% 0.09%

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 5 16 50251 304.49 790 772 162.5
A 13 251 10891 62.27 790 772 162.5
A 0 226 7313 40.25 790 772 162.5
B 0 214 68171 439.77 791 772 153.3
B 4 81 25918 164.07 791 772 153.3
B 12 111 16307 101.36 791 772 153.3
C 8 128 14497 76.98 764 767 178.4
C 8 112 6867 34.2 764 767 178.4
C 13 61 5904 28.8 764 767 178.4
D 13 105 48731 238.4 761 743 201.3
D 1 52 29837 144.54 761 743 201.3
D 2 234 25659 123.78 761 743 201.3

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