ASTROSAT CZTI

Data Quality Report

Orbit 20190327_A05_163T01_9000002820_level2

Creation date: 2019-04-01T16:56:56.303589
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/AS1A05_163T01_9000002820cztM0_level2_bc.evt modeM0/AS1A05_163T01_9000002820cztM0_level2_quad_clean.evt
Size (bytes)11,187,319,6802,508,831,360
Size10.4 GB 2.3 GB
Events in quadrant A109,017,58613,628,494
Events in quadrant B85,319,19116,291,060
Events in quadrant C46,695,10216,342,340
Events in quadrant D83,719,62015,564,146

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08053640
B06042410
C04425330
D05887960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042080
B042080
C042080
D042080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2064805424226.269857%
B206480203959.877470%
C20648036051.745932%
D206480155447.528090%

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 239462 206274 2557 2557 1.07% 1.24%
B 239462 206455 2000 2000 0.84% 0.97%
C 239462 206489 9 9 0.00% 0.00%
D 239462 206477 1215 1215 0.51% 0.59%

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 14 235 72415263 35640.86 9355 9182 2031.5
A 13 254 244520 115.84 9355 9182 2031.5
A 15 174 195216 91.57 9355 9182 2031.5
B 3 112 38105031 19256.47 10653 10388 1978.3
B 7 220 1744712 876.68 10653 10388 1978.3
B 0 189 1241632 622.38 10653 10388 1978.3
C 3 233 5252320 2132.33 10617 10570 2458.2
C 6 96 187722 72.06 10617 10570 2458.2
C 5 112 149974 56.71 10617 10570 2458.2
D 7 238 26975137 11153.29 10526 10153 2417.7
D 1 52 7783892 3215.38 10526 10153 2417.7
D 12 218 2628655 1083.07 10526 10153 2417.7

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