ASTROSAT CZTI

Data Quality Report

Orbit 20210721_A10_094T31_9000004568_level2

Creation date: 2021-07-22T13:39:58.721510
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_094T31_9000004568cztM0_level2_bc.evt modeM0/AS1A10_094T31_9000004568cztM0_level2_quad_clean.evt
Size (bytes)233,925,120104,592,960
Size223.1 MB 99.7 MB
Events in quadrant A1,098,920709,004
Events in quadrant B2,612,421698,003
Events in quadrant C1,144,567697,842
Events in quadrant D1,856,415687,784

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109720
B0164850
C0112160
D0131050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5362911.697128%
B53621653.077210%
C53621482.760164%
D53621162.163372%

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 6202 5361 0 0 0.00% 0.00%
B 6202 5362 1 1 0.02% 0.02%
C 6202 5362 0 0 0.00% 0.00%
D 6202 5361 7 7 0.11% 0.13%

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 13 254 10584 162.69 283 278 63.3
A 0 226 1825 24.42 283 278 63.3
A 12 194 1774 23.62 283 278 63.3
B 6 159 1389399 24720.69 280 274 56.2
B 12 1 86732 1538.6 280 274 56.2
B 0 190 21339 374.87 280 274 56.2
C 3 233 49733 716.78 276 275 69.0
C 14 254 10906 154.07 276 275 69.0
C 2 114 10100 142.39 276 275 69.0
D 8 195 408263 5991.1 282 273 68.1
D 12 218 151804 2225.15 282 273 68.1
D 10 203 47233 689.58 282 273 68.1

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