ASTROSAT CZTI

Data Quality Report

Orbit 31049

Creation date: 2024-06-27T20:22:44.376623
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/AS1A10_071T63_9000004486_31049cztM0_level2.evt modeM0/AS1A10_071T63_9000004486_31049cztM0_level2_quad_clean.evt
Size (bytes)629,599,68097,585,920
Size600.4 MB 93.1 MB
Events in quadrant A3,315,783660,057
Events in quadrant B5,537,755659,755
Events in quadrant C3,634,603620,304
Events in quadrant D6,159,118580,489

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136482
B0205612
C0146142
D0225763

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226641.027947%
B62262634.224221%
C62262534.063604%
D62254557.309237%

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 7575 6226 0 0 0.00% 0.00%
B 7575 6225 95 95 1.25% 1.53%
C 7575 6225 73 73 0.96% 1.17%
D 7574 6224 438 438 5.78% 7.04%

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 13 254 12140 66.54 855 841 169.8
A 3 137 8025 42.31 855 841 169.8
A 0 226 7259 37.79 855 841 169.8
B 6 159 1792841 11253.75 846 827 159.2
B 5 172 278775 1745.5 846 827 159.2
B 4 171 49043 302.79 846 827 159.2
C 0 10 247072 1313.47 808 815 187.5
C 14 238 132462 702.17 808 815 187.5
C 15 208 42948 224.72 808 815 187.5
D 8 195 1167545 6195.48 800 783 188.3
D 1 52 1011390 5366.3 800 783 188.3
D 13 249 387427 2053.07 800 783 188.3

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