ASTROSAT CZTI

Data Quality Report

Orbit 20200607_A09_057T04_9000003712_level2

Creation date: 2021-01-10T18:43:54.745107
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/AS1A09_057T04_9000003712cztM0_level2_bc.evt modeM0/AS1A09_057T04_9000003712cztM0_level2_quad_clean.evt
Size (bytes)5,906,269,4401,671,396,480
Size5.5 GB 1.6 GB
Events in quadrant A39,900,27310,813,568
Events in quadrant B30,222,43410,927,162
Events in quadrant C27,839,18310,413,395
Events in quadrant D72,282,9759,774,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02270
B02270
C02270
D02270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03033330
B02731320
C02698010
D04255970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025860
B025860
C025860
D025860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12692030572.408604%
B12692017401.370942%
C12691920671.628598%
D1269201271110.014970%

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 149735 126911 1068 1068 0.71% 0.84%
B 149735 126904 29 29 0.02% 0.02%
C 149735 126905 0 0 0.00% 0.00%
D 149735 126898 3701 3701 2.47% 2.92%

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 6 16 11551694 7502.16 7214 7094 1538.8
A 15 173 487168 311.97 7214 7094 1538.8
A 13 254 168525 104.9 7214 7094 1538.8
B 3 112 1215644 912.84 7195 7043 1324.0
B 0 190 490154 364.89 7195 7043 1324.0
B 0 229 379711 281.47 7195 7043 1324.0
C 7 87 617578 375.88 6903 6893 1624.7
C 9 54 225268 134.41 6903 6893 1624.7
C 7 247 218237 130.08 6903 6893 1624.7
D 1 52 23843547 15157.26 6808 6596 1572.6
D 8 195 9958457 6328.11 6808 6596 1572.6
D 7 238 7773014 4938.45 6808 6596 1572.6

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