ASTROSAT CZTI

Data Quality Report

Orbit 20220213_A05_156T01_9000004928_level2

Creation date: 2022-02-16T10:51:03.878110
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/AS1A05_156T01_9000004928cztM0_level2_bc.evt modeM0/AS1A05_156T01_9000004928cztM0_level2_quad_clean.evt
Size (bytes)3,969,941,7601,028,462,400
Size3.7 GB 980.8 MB
Events in quadrant A18,309,0266,595,964
Events in quadrant B27,515,8336,568,382
Events in quadrant C21,812,5606,582,189
Events in quadrant D47,262,6536,026,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016020
B016020
C016020
D016020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01647730
B02067060
C01703200
D02702480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A784552030.258747%
B7845544305.646549%
C784553670.467784%
D7845563108.042827%

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 110880 78470 19 19 0.02% 0.02%
B 110880 78456 196 196 0.18% 0.25%
C 110880 78458 82 82 0.07% 0.10%
D 110880 78456 918 918 0.83% 1.17%

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 9 143 432643 455.54 4302 4243 940.4
A 10 83 375991 395.3 4302 4243 940.4
A 15 169 358510 376.71 4302 4243 940.4
B 5 172 6988542 8599.33 4188 4117 812.2
B 0 229 1140308 1398.9 4188 4117 812.2
B 5 63 784956 961.38 4188 4117 812.2
C 15 214 3150974 3337.71 4178 4163 942.8
C 14 67 1098648 1160.88 4178 4163 942.8
C 0 10 758574 800.18 4178 4163 942.8
D 8 195 12848363 13384.21 4077 3963 959.7
D 12 17 5423296 5647.09 4077 3963 959.7
D 2 250 2497578 2598.41 4077 3963 959.7

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