ASTROSAT CZTI

Data Quality Report

Orbit 30858

Creation date: 2024-06-27T20:20:26.870917
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/AS1A10_071T46_9000004460_30858cztM0_level2.evt modeM0/AS1A10_071T46_9000004460_30858cztM0_level2_quad_clean.evt
Size (bytes)695,710,08093,862,080
Size663.5 MB 89.5 MB
Events in quadrant A3,261,138627,497
Events in quadrant B9,887,885583,956
Events in quadrant C3,648,125592,046
Events in quadrant D3,834,395586,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137252
B0339102
C0148563
D0156322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6484300.462677%
B6484189629.241209%
C64831542.375443%
D6483220.339349%

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 7649 6485 8 8 0.10% 0.12%
B 7649 6484 1224 1224 16.00% 18.88%
C 7648 6483 58 58 0.76% 0.89%
D 7648 6484 10 10 0.13% 0.15%

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 78497 470.64 824 808 165.1
A 13 254 13198 75.06 824 808 165.1
A 3 137 8072 44.01 824 808 165.1
B 6 36 4911990 33488.95 773 755 146.7
B 6 159 1787948 12186.59 773 755 146.7
B 0 229 51497 346.0 773 755 146.7
C 0 10 231274 1251.22 783 790 184.2
C 2 16 180581 976.02 783 790 184.2
C 14 238 126818 684.16 783 790 184.2
D 8 195 680424 3660.15 786 768 185.7
D 2 250 79637 424.73 786 768 185.7
D 1 52 31990 168.14 786 768 185.7

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