ASTROSAT CZTI

Data Quality Report

Orbit 27849

Creation date: 2024-06-27T19:45:09.562235
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_002T04_9000004022_27849cztM0_level2.evt modeM0/AS1A10_002T04_9000004022_27849cztM0_level2_quad_clean.evt
Size (bytes)481,095,360118,690,560
Size458.8 MB 113.2 MB
Events in quadrant A3,247,897831,399
Events in quadrant B3,492,634811,192
Events in quadrant C3,215,024767,571
Events in quadrant D4,207,121765,263

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133390
B0141390
C0131370
D0165360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6013691.147514%
B6014861.429997%
C6013941.563280%
D60131352.245136%

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 7318 6013 0 0 0.00% 0.00%
B 7319 6014 14 14 0.19% 0.23%
C 7318 6013 0 0 0.00% 0.00%
D 7318 6013 96 96 1.31% 1.60%

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 13 254 11036 61.56 839 825 165.9
A 0 226 7381 39.52 839 825 165.9
A 3 137 7067 37.63 839 825 165.9
B 15 32 144473 954.38 812 794 150.5
B 0 190 77620 510.31 812 794 150.5
B 10 245 52012 340.21 812 794 150.5
C 14 238 128594 701.66 784 790 182.1
C 3 233 25073 133.31 784 790 182.1
C 13 61 5457 25.62 784 790 182.1
D 1 52 620412 3288.22 806 787 188.4
D 13 104 363695 1925.88 806 787 188.4
D 2 250 130156 686.53 806 787 188.4

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