ASTROSAT CZTI

Data Quality Report

Orbit 20191116_A07_007T04_9000003310_level2

Creation date: 2019-11-20T17:40:24.270281
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/AS1A07_007T04_9000003310cztM0_level2_bc.evt modeM0/AS1A07_007T04_9000003310cztM0_level2_quad_clean.evt
Size (bytes)7,820,064,0002,949,612,480
Size7.3 GB 2.7 GB
Events in quadrant A45,861,77319,011,273
Events in quadrant B49,119,24819,239,627
Events in quadrant C44,469,12818,457,205
Events in quadrant D82,222,89817,388,627

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04590190
B04695030
C04605230
D05748050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045360
B045360
C045360
D045360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03570
B03580
C03580
D03580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22259525081.126710%
B22259533401.500483%
C22259536081.620881%
D222595110664.971361%

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 263374 222582 0 0 0.00% 0.00%
B 263374 222577 128 128 0.05% 0.06%
C 263374 222583 3 3 0.00% 0.00%
D 263374 222580 4320 4320 1.64% 1.94%

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 3 1 304437 114.88 11784 11569 2549.2
A 13 254 299890 113.1 11784 11569 2549.2
A 0 226 75706 25.16 11784 11569 2549.2
B 3 64 1511844 679.9 11913 11630 2206.5
B 0 190 573950 254.85 11913 11630 2206.5
B 0 229 356943 156.5 11913 11630 2206.5
C 0 10 151279 51.67 11445 11384 2707.4
C 10 22 115847 38.58 11445 11384 2707.4
C 9 54 110720 36.69 11445 11384 2707.4
D 1 52 30635369 11559.11 11375 10991 2649.4
D 7 38 2249999 845.11 11375 10991 2649.4
D 12 227 2146870 806.18 11375 10991 2649.4

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