ASTROSAT CZTI

Data Quality Report

Orbit 20170627_C02_045T01_9000001342_level2

Creation date: 2017-09-24T07:52:02.421849
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/AS1C02_045T01_9000001342cztM0_level2.evt modeM0/AS1C02_045T01_9000001342cztM0_level2_quad_clean.evt
Size (bytes)1,330,395,840290,105,280
Size1.2 GB 276.7 MB
Events in quadrant A11,060,8951,864,312
Events in quadrant B9,307,6671,887,606
Events in quadrant C8,828,9641,876,755
Events in quadrant D9,795,0951,835,470

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B12733597094080
C12733597094080
D12733597094080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03940
C03900
D03960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0452030
B0403410
C0399820
D0425670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191702241.168492%
B192071920.999636%
C191801050.547445%
D191992171.130267%

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 22558 19314 47 47 0.21% 0.24%
B 22558 19375 72 72 0.32% 0.37%
C 22558 19355 26 26 0.12% 0.13%
D 22535 19366 117 117 0.52% 0.60%

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 2204716 5001.5 2188 2142 440.4
A 1 162 216622 487.03 2188 2142 440.4
A 1 178 74988 165.41 2188 2142 440.4
B 0 187 298777 727.06 2181 2122 408.0
B 0 214 196814 477.16 2181 2122 408.0
B 0 219 102966 247.15 2181 2122 408.0
C 9 68 380189 779.19 2120 2129 485.2
C 4 254 163265 332.11 2120 2129 485.2
C 13 61 15984 28.56 2120 2129 485.2
D 1 52 933531 1748.08 2124 2075 532.8
D 12 233 281774 524.91 2124 2075 532.8
D 7 71 166741 309.03 2124 2075 532.8

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