ASTROSAT CZTI

Data Quality Report

Orbit 16833

Creation date: 2024-06-27T17:28:23.190239
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/AS1A05_056T01_9000002498_16833cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16833cztM0_level2_quad_clean.evt
Size (bytes)504,956,16066,257,280
Size481.6 MB 63.2 MB
Events in quadrant A3,347,141400,754
Events in quadrant B3,690,882407,936
Events in quadrant C3,860,037385,488
Events in quadrant D3,974,789379,800

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137843
B0148992
C0156262
D0158732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6189961.551139%
B61891342.165132%
C61891672.698336%
D61892283.683955%

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 7470 6191 2 2 0.03% 0.03%
B 7470 6191 12 12 0.16% 0.19%
C 7470 6190 1 1 0.01% 0.02%
D 7470 6191 107 107 1.43% 1.73%

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 15 174 38979 224.65 856 839 169.8
A 9 143 20633 116.59 856 839 169.8
A 0 226 7540 39.47 856 839 169.8
B 0 229 186017 1160.03 854 836 159.6
B 4 173 122864 764.42 854 836 159.6
B 15 35 32679 199.48 854 836 159.6
C 3 233 490269 2565.22 829 839 190.8
C 14 238 129397 673.8 829 839 190.8
C 0 207 6860 31.56 829 839 190.8
D 1 52 717581 3622.77 830 808 197.9
D 5 222 108480 544.2 830 808 197.9
D 2 234 23206 113.21 830 808 197.9

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