ASTROSAT CZTI

Data Quality Report

Orbit 20210622_A10_071T52_9000004480_level2

Creation date: 2021-06-25T10:15:22.475855
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_071T52_9000004480cztM0_level2_bc.evt modeM0/AS1A10_071T52_9000004480cztM0_level2_quad_clean.evt
Size (bytes)3,500,507,520963,155,520
Size3.3 GB 918.5 MB
Events in quadrant A16,135,8746,249,413
Events in quadrant B38,308,8936,223,336
Events in quadrant C19,021,8445,887,196
Events in quadrant D27,409,3485,632,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01576670
B02323830
C01711950
D02013600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015400
B015400
C015400
D015400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7554410921.445515%
B7554420052.654082%
C7554424963.304035%
D7554439625.244626%

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 87719 75536 2 2 0.00% 0.00%
B 87719 75535 14 14 0.02% 0.02%
C 87719 75537 47 47 0.05% 0.06%
D 87719 75540 205 205 0.23% 0.27%

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 136306 148.05 4166 4096 893.0
A 11 47 26711 25.32 4166 4096 893.0
A 0 226 26191 24.74 4166 4096 893.0
B 6 159 20715542 26429.02 4182 4085 783.7
B 0 190 390244 492.76 4182 4085 783.7
B 0 183 317630 400.1 4182 4085 783.7
C 0 10 3357464 3623.66 3948 3932 925.5
C 3 233 146968 154.56 3948 3932 925.5
C 2 114 142148 149.35 3948 3932 925.5
D 8 195 6750832 7470.74 3966 3835 903.1
D 12 218 2387297 2639.13 3966 3835 903.1
D 13 174 1286675 1420.45 3966 3835 903.1

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