ASTROSAT CZTI

Data Quality Report

Orbit 20170622_A03_009T01_9000001328_level2

Creation date: 2017-09-24T06:45:08.198916
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/AS1A03_009T01_9000001328cztM0_level2.evt modeM0/AS1A03_009T01_9000001328cztM0_level2_quad_clean.evt
Size (bytes)1,545,658,560252,671,040
Size1.4 GB 241.0 MB
Events in quadrant A12,355,8761,573,288
Events in quadrant B9,609,4101,596,628
Events in quadrant C10,546,9351,584,090
Events in quadrant D12,943,9901,516,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04080
C04080
D04080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500470
B0420030
C0460870
D0520550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A200653121.554946%
B200893141.563044%
C200772801.394631%
D200626133.055528%

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 21668 20150 23 23 0.11% 0.11%
B 21668 20151 46 46 0.21% 0.23%
C 21668 20149 2 2 0.01% 0.01%
D 21668 20152 345 345 1.59% 1.71%

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 8 5 3018511 6451.85 2298 2249 467.5
A 1 162 202382 428.09 2298 2249 467.5
A 1 178 61440 126.61 2298 2249 467.5
B 0 214 193911 434.38 2313 2253 441.2
B 5 255 164485 367.69 2313 2253 441.2
B 0 219 70969 155.74 2313 2253 441.2
C 9 68 1811828 3501.63 2232 2238 516.8
C 13 61 16946 28.46 2232 2238 516.8
C 10 22 16485 27.57 2232 2238 516.8
D 8 195 2176091 3903.06 2195 2133 557.0
D 1 52 1300178 2330.47 2195 2133 557.0
D 7 71 371258 662.72 2195 2133 557.0

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