ASTROSAT CZTI

Data Quality Report

Orbit 20200628_A09_008T03_9000003746_level2

Creation date: 2021-01-10T06:25:41.665652
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_008T03_9000003746cztM0_level2_bc.evt modeM0/AS1A09_008T03_9000003746cztM0_level2_quad_clean.evt
Size (bytes)4,318,773,1201,172,160,000
Size4.0 GB 1.1 GB
Events in quadrant A46,016,3066,986,631
Events in quadrant B21,247,9907,806,167
Events in quadrant C20,957,4627,277,821
Events in quadrant D36,211,2317,022,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019100
B019100
C019100
D019100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02816190
B01988590
C02014280
D02477520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A934661200012.838893%
B9346612521.339525%
C9346620702.214709%
D9346642424.538549%

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 111031 93459 6460 6460 5.82% 6.91%
B 111031 93461 4 4 0.00% 0.00%
C 111031 93460 107 107 0.10% 0.11%
D 111031 93461 1028 1028 0.93% 1.10%

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 0 13 26757421 25258.17 4929 4853 1059.2
A 13 254 117862 106.7 4929 4853 1059.2
A 8 192 97367 87.35 4929 4853 1059.2
B 0 219 275185 270.51 5276 5151 998.2
B 0 245 257219 252.51 5276 5151 998.2
B 0 190 238149 233.41 5276 5151 998.2
C 3 233 1964585 1714.42 4925 4905 1143.1
C 13 61 28749 20.86 4925 4905 1143.1
C 14 225 24585 17.22 4925 4905 1143.1
D 1 52 6670373 5875.5 4956 4790 1134.5
D 7 80 4866639 4285.57 4956 4790 1134.5
D 8 195 3933041 3462.63 4956 4790 1134.5

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