ASTROSAT CZTI

Data Quality Report

Orbit 27227

Creation date: 2024-06-27T19:37:56.046088
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/AS1T03_243T01_9000003918_27227cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27227cztM0_level2_quad_clean.evt
Size (bytes)556,640,640111,398,400
Size530.9 MB 106.2 MB
Events in quadrant A3,725,523770,655
Events in quadrant B3,397,024780,989
Events in quadrant C3,324,672719,284
Events in quadrant D5,993,684672,969

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151310
B0139460
C0136620
D0220500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61601532.483766%
B6161941.525726%
C61611111.801656%
D616069811.331169%

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 7510 6161 41 41 0.55% 0.67%
B 7511 6162 0 0 0.00% 0.00%
C 7511 6162 8 8 0.11% 0.13%
D 7509 6160 609 609 8.11% 9.89%

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 14 235 284575 1640.26 868 855 173.0
A 0 13 86193 493.36 868 855 173.0
A 13 254 9486 49.9 868 855 173.0
B 4 171 32143 196.75 852 834 159.1
B 0 190 20180 121.57 852 834 159.1
B 12 111 18153 108.83 852 834 159.1
C 14 238 133915 719.26 804 813 185.1
C 15 208 34058 179.65 804 813 185.1
C 2 16 14336 73.08 804 813 185.1
D 1 52 2621610 13928.83 794 780 188.2
D 2 250 216497 1146.46 794 780 188.2
D 12 233 46303 241.94 794 780 188.2

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