ASTROSAT CZTI

Data Quality Report

Orbit 24664

Creation date: 2024-06-27T19:08:31.138647
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_191T01_9000003618_24664cztM0_level2.evt modeM0/AS1T03_191T01_9000003618_24664cztM0_level2_quad_clean.evt
Size (bytes)424,368,000127,082,880
Size404.7 MB 121.2 MB
Events in quadrant A2,932,144889,721
Events in quadrant B2,974,495886,232
Events in quadrant C2,919,999839,605
Events in quadrant D3,640,787837,952

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121981
B0122302
C0122121
D0146861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5664781.377119%
B5664641.129944%
C56641051.853814%
D5664751.324153%

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 6914 5664 0 0 0.00% 0.00%
B 6914 5664 0 0 0.00% 0.00%
C 6914 5664 0 0 0.00% 0.00%
D 6914 5664 6 6 0.09% 0.11%

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 9065 55.25 760 747 150.6
A 0 226 6634 39.1 760 747 150.6
A 3 137 6199 36.21 760 747 150.6
B 0 189 40627 291.06 740 726 137.1
B 7 202 25773 182.71 740 726 137.1
B 12 111 15836 110.22 740 726 137.1
C 14 238 117529 724.06 709 714 161.3
C 10 91 23662 142.24 709 714 161.3
C 5 112 7477 41.92 709 714 161.3
D 8 195 736930 4199.4 736 717 175.3
D 7 238 59215 333.68 736 717 175.3
D 1 52 54573 307.2 736 717 175.3

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