ASTROSAT CZTI

Data Quality Report

Orbit 24277

Creation date: 2024-06-27T19:04:15.668947
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/AS1C05_007T01_9000003588_24277cztM0_level2.evt modeM0/AS1C05_007T01_9000003588_24277cztM0_level2_quad_clean.evt
Size (bytes)597,113,28086,535,360
Size569.5 MB 82.5 MB
Events in quadrant A3,454,364543,571
Events in quadrant B3,490,115554,220
Events in quadrant C4,984,027522,046
Events in quadrant D5,681,985513,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144132
B0145053
C0196852
D0217052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69881141.631368%
B69871261.803349%
C69873314.737369%
D69872824.036067%

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 7673 6988 0 0 0.00% 0.00%
B 7672 6987 0 0 0.00% 0.00%
C 7672 6987 87 87 1.13% 1.25%
D 7672 6987 142 142 1.85% 2.03%

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 9399 46.87 897 878 181.8
A 3 137 8029 39.33 897 878 181.8
A 0 226 7749 37.79 897 878 181.8
B 12 111 20770 117.31 884 862 169.7
B 11 111 18814 105.78 884 862 169.7
B 0 190 17166 96.07 884 862 169.7
C 7 247 1076374 5368.95 855 862 200.3
C 2 16 323032 1608.27 855 862 200.3
C 14 238 134326 666.25 855 862 200.3
D 1 52 1315797 6214.2 868 842 211.6
D 8 195 944182 4458.03 868 842 211.6
D 12 233 137519 645.91 868 842 211.6

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