ASTROSAT CZTI

Data Quality Report

Orbit 16513

Creation date: 2024-06-27T17:23:46.370883
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/AS1A05_174T01_9000002440_16513cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16513cztM0_level2_quad_clean.evt
Size (bytes)441,336,96098,075,520
Size420.9 MB 93.5 MB
Events in quadrant A3,303,066642,427
Events in quadrant B3,335,711660,342
Events in quadrant C3,212,169617,195
Events in quadrant D3,078,974602,632

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140692
B0140251
C0136191
D0136271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6422851.323575%
B64221021.588290%
C6422941.463718%
D6422741.152289%

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 7593 6423 1 1 0.01% 0.02%
B 7593 6423 6 6 0.08% 0.09%
C 7593 6423 0 0 0.00% 0.00%
D 7593 6423 9 9 0.12% 0.14%

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 15 174 162037 990.88 809 793 162.7
A 15 223 24502 145.7 809 793 162.7
A 0 226 7116 38.86 809 793 162.7
B 15 35 48596 309.03 812 794 154.7
B 0 189 30872 194.45 812 794 154.7
B 5 236 28559 179.5 812 794 154.7
C 14 238 120395 670.15 765 772 178.5
C 3 233 86467 480.08 765 772 178.5
C 7 247 21855 118.11 765 772 178.5
D 1 52 72160 378.11 772 748 188.9
D 12 110 27884 143.68 772 748 188.9
D 10 70 23791 122.01 772 748 188.9

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