ASTROSAT CZTI

Data Quality Report

Orbit 34937

Creation date: 2022-03-15T19:54:19.057500
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/AS1A11_065T12_9000005004_34937cztM0_level2.evt modeM0/AS1A11_065T12_9000005004_34937cztM0_level2_quad_clean.evt
Size (bytes)945,014,400133,283,520
Size901.2 MB 127.1 MB
Events in quadrant A11,233,982791,004
Events in quadrant B5,214,608901,329
Events in quadrant C4,622,511893,272
Events in quadrant D6,934,482818,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0395042
B0214952
C0190752
D0268762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9104262428.822496%
B91041972.163884%
C9104670.735940%
D91044114.514499%

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 10416 9104 2325 2325 22.32% 25.54%
B 10417 9105 135 135 1.30% 1.48%
C 10417 9105 58 58 0.56% 0.64%
D 10417 9105 338 338 3.24% 3.71%

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 15 169 7535487 39999.81 930 913 188.4
A 10 83 64214 336.05 930 913 188.4
A 13 6 17919 90.28 930 913 188.4
B 5 172 836157 4230.53 1022 992 197.4
B 0 190 194894 982.21 1022 992 197.4
B 4 232 130044 653.71 1022 992 197.4
C 15 214 378575 1621.15 1007 1013 232.9
C 0 10 192001 820.05 1007 1013 232.9
C 14 67 41238 172.72 1007 1013 232.9
D 8 195 1184888 4917.03 987 959 240.8
D 7 38 394793 1635.65 987 959 240.8
D 10 118 348023 1441.41 987 959 240.8

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