ASTROSAT CZTI

Data Quality Report

Orbit 46638

Creation date: 2024-06-27T23:25:44.445208
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/AS1A13_092T16_9000006244_46638cztM0_level2.fits modeM0/AS1A13_092T16_9000006244_46638cztM0_level2_quad_clean.evt
Size (bytes)657,207,360150,788,160
Size626.8 MB 143.8 MB
Events in quadrant A7,672,9611,072,316
Events in quadrant B5,642,5151,024,154
Events in quadrant C3,739,4831,003,477
Events in quadrant D6,653,381909,968

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276581
B0222731
C0172171
D0253011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80043884.847576%
B80044365.447276%
C8004620.774613%
D80044795.984508%

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 8004 8004 164 164 2.05% 2.05%
B 8004 8004 128 128 1.60% 1.60%
C 8004 8004 1 1 0.01% 0.01%
D 8004 8004 343 343 4.29% 4.29%

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 10 83 3685198 17111.93 990 971 215.3
A 7 3 109234 502.84 990 971 215.3
A 0 247 24982 111.52 990 971 215.3
B 10 246 629404 3295.41 941 914 190.7
B 5 32 547330 2865.06 941 914 190.7
B 15 201 448489 2346.8 941 914 190.7
C 14 254 35625 153.71 935 941 225.6
C 1 3 29994 128.76 935 941 225.6
C 14 67 10402 41.93 935 941 225.6
D 1 52 1825231 7312.54 942 912 249.5
D 12 128 399133 1596.22 942 912 249.5
D 13 249 339137 1355.73 942 912 249.5

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