ASTROSAT CZTI

Data Quality Report

Orbit 21736

Creation date: 2024-06-27T18:31:38.666800
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/AS1A07_005T01_9000003224_21736cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21736cztM0_level2_quad_clean.evt
Size (bytes)517,780,80063,031,680
Size493.8 MB 60.1 MB
Events in quadrant A4,164,279355,526
Events in quadrant B3,754,988377,349
Events in quadrant C3,188,605363,926
Events in quadrant D4,133,694359,566

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163551
B0152761
C0135172
D0166691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64743896.008650%
B64752003.088803%
C6474911.405622%
D64742193.382762%

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 7484 6474 307 307 4.10% 4.74%
B 7485 6475 108 108 1.44% 1.67%
C 7484 6475 0 0 0.00% 0.00%
D 7484 6475 121 121 1.62% 1.87%

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 15 236 1086122 6731.97 798 780 161.2
A 13 254 11197 64.61 798 780 161.2
A 0 226 6879 37.83 798 780 161.2
B 3 64 395754 2553.1 811 792 154.7
B 0 190 53645 341.65 811 792 154.7
B 0 230 38728 245.22 811 792 154.7
C 14 238 125685 679.27 785 789 183.9
C 13 61 5484 25.53 785 789 183.9
C 14 111 1964 6.39 785 789 183.9
D 12 235 322744 1651.04 794 769 195.0
D 7 238 276773 1415.31 794 769 195.0
D 1 52 212526 1085.86 794 769 195.0

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