ASTROSAT CZTI

Data Quality Report

Orbit 20210727_A10_053T21_9000004592_level2

Creation date: 2021-07-28T13:56:55.718719
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_053T21_9000004592cztM0_level2_bc.evt modeM0/AS1A10_053T21_9000004592cztM0_level2_quad_clean.evt
Size (bytes)319,956,48079,453,440
Size305.1 MB 75.8 MB
Events in quadrant A1,470,166501,979
Events in quadrant B3,121,491499,095
Events in quadrant C1,507,116488,508
Events in quadrant D3,156,921478,042

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139400
B0195060
C0139230
D0192650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62832173.453764%
B62832463.915327%
C62832193.485596%
D62832774.408722%

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 7183 6281 11 11 0.15% 0.18%
B 7183 6282 0 0 0.00% 0.00%
C 7183 6280 2 2 0.03% 0.03%
D 7183 6280 14 14 0.19% 0.22%

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 238278 3313.87 318 310 71.8
A 13 254 11544 156.43 318 310 71.8
A 12 194 1949 22.82 318 310 71.8
B 6 159 1659643 25882.27 317 308 64.1
B 4 80 151560 2359.23 317 308 64.1
B 0 230 20879 320.87 317 308 64.1
C 3 233 135132 1790.18 309 305 75.3
C 0 10 92746 1227.39 309 305 75.3
C 10 22 54565 720.44 309 305 75.3
D 8 195 1471762 19895.76 313 301 74.0
D 12 79 187571 2532.09 313 301 74.0
D 13 249 133859 1805.85 313 301 74.0

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