ASTROSAT CZTI

Data Quality Report

Orbit 26117

Creation date: 2024-06-27T19:25:01.599827
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/AS1A09_138T04_9000003776_26117cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26117cztM0_level2_quad_clean.evt
Size (bytes)534,856,32084,723,840
Size510.1 MB 80.8 MB
Events in quadrant A3,540,242523,021
Events in quadrant B3,586,564534,251
Events in quadrant C3,579,183507,415
Events in quadrant D5,006,501502,352

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150050
B0150070
C0151120
D0196930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71582383.324951%
B71592924.078782%
C71592663.715603%
D71592753.841319%

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 7228 7158 0 0 0.00% 0.00%
B 7229 7159 0 0 0.00% 0.00%
C 7229 7159 0 0 0.00% 0.00%
D 7229 7159 47 47 0.65% 0.66%

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 37676 199.87 909 888 184.1
A 13 254 9051 44.35 909 888 184.1
A 3 137 8755 42.74 909 888 184.1
B 12 111 21793 118.1 900 877 177.1
B 11 111 19514 105.23 900 877 177.1
B 14 111 17640 94.65 900 877 177.1
C 14 238 136856 659.73 868 874 206.1
C 2 16 29798 140.33 868 874 206.1
C 3 233 26413 123.9 868 874 206.1
D 7 80 1104727 5209.34 884 864 211.9
D 1 52 368836 1736.53 884 864 211.9
D 13 168 109203 511.27 884 864 211.9

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