ASTROSAT CZTI

Data Quality Report

Orbit 08889

Creation date: 2024-06-27T15:38:37.547932
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/AS1A03_092T01_9000001240_08889cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08889cztM0_level2_quad_clean.evt
Size (bytes)1,195,139,520253,425,600
Size1.1 GB 241.7 MB
Events in quadrant A9,283,8631,675,475
Events in quadrant B8,077,6181,685,543
Events in quadrant C7,323,7631,628,202
Events in quadrant D10,427,9291,582,755

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03262
D03262

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037949123
B034478106
C033157100
D041250269

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A160164502.809690%
B160202951.841448%
C160221751.092248%
D160043982.486878%

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 19531 16037 126 126 0.65% 0.79%
B 19531 16045 20 20 0.10% 0.12%
C 19531 16045 3 3 0.02% 0.02%
D 19531 16034 161 161 0.82% 1.00%

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 5 1068780 2693.09 1962 1923 396.1
A 0 128 459634 1155.41 1962 1923 396.1
A 15 174 132805 330.39 1962 1923 396.1
B 0 214 143476 388.52 1956 1916 364.4
B 10 16 79812 213.79 1956 1916 364.4
B 0 213 47474 125.04 1956 1916 364.4
C 12 4 20680 43.88 1868 1873 428.6
C 13 61 14284 28.96 1868 1873 428.6
C 8 128 12671 25.19 1868 1873 428.6
D 1 52 1113254 2324.27 1867 1818 478.2
D 8 195 1057626 2207.94 1867 1818 478.2
D 12 233 330103 686.52 1867 1818 478.2

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