ASTROSAT CZTI

Data Quality Report

Orbit 46944

Creation date: 2024-06-27T23:29:46.271776
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_077T01_9000006286_46944cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46944cztM0_level2_quad_clean.evt
Size (bytes)762,652,800119,554,560
Size727.3 MB 114.0 MB
Events in quadrant A7,876,353822,894
Events in quadrant B10,145,451678,257
Events in quadrant C3,718,137827,330
Events in quadrant D5,872,809735,441

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286620
B0356400
C0170130
D0230040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79992543.175397%
B7999197324.665583%
C8000420.525000%
D80003944.925000%

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 8054 7999 51 51 0.63% 0.64%
B 8054 7999 1286 1286 15.97% 16.08%
C 8055 8001 38 38 0.47% 0.47%
D 8055 8001 314 314 3.90% 3.92%

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 4151668 21880.71 899 879 189.7
A 13 248 183126 960.71 899 879 189.7
A 0 243 19744 99.45 899 879 189.7
B 3 112 6430464 38259.0 838 813 168.1
B 5 32 86698 511.05 838 813 168.1
B 5 172 55534 325.61 838 813 168.1
C 14 254 143536 676.19 889 896 210.9
C 14 224 48630 226.28 889 896 210.9
C 12 2 46691 217.09 889 896 210.9
D 1 52 1195020 5435.78 869 843 219.7
D 13 169 491986 2235.64 869 843 219.7
D 13 249 346547 1573.61 869 843 219.7

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