ASTROSAT CZTI

Data Quality Report

Orbit 20171231_C03_014T01_9000001804_level2

Creation date: 2018-08-01T22:35:36.960142
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C03_014T01_9000001804cztM0_level2_bc.evt modeM0/AS1C03_014T01_9000001804cztM0_level2_quad_clean.evt
Size (bytes)1,910,024,640756,691,200
Size1.8 GB 721.6 MB
Events in quadrant A14,559,2815,120,735
Events in quadrant B18,762,2744,810,979
Events in quadrant C9,661,1855,115,355
Events in quadrant D11,951,0004,940,518

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08660
B08660
C08660
D08660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01119650
B01361260
C0918520
D0994260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4270316923.962251%
B42703596413.966232%
C427034911.149802%
D427037391.730558%

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 46625 42702 221 221 0.47% 0.52%
B 46625 42631 194 194 0.42% 0.46%
C 46625 42703 128 128 0.27% 0.30%
D 46625 42703 93 93 0.20% 0.22%

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 8 15 2205354 4845.15 2070 2034 454.7
A 15 249 2030547 4460.75 2070 2034 454.7
A 13 251 1004917 2205.36 2070 2034 454.7
B 4 239 4771933 12626.28 1950 1902 377.8
B 4 206 2563544 6780.67 1950 1902 377.8
B 3 64 1234888 3263.72 1950 1902 377.8
C 15 208 1494658 3289.73 2028 2006 453.7
C 4 175 95709 206.52 2028 2006 453.7
C 0 207 26821 54.69 2028 2006 453.7
D 1 52 1319282 2706.1 2048 1973 486.8
D 14 34 483733 989.66 2048 1973 486.8
D 13 104 358385 732.17 2048 1973 486.8

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