ASTROSAT CZTI

Data Quality Report

Orbit 20170130_C02_016T01_9000000992_level2

Creation date: 2021-08-25T19:03:51.916318
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/AS1C02_016T01_9000000992cztM0_level2_bc.evt modeM0/AS1C02_016T01_9000000992cztM0_level2_quad_clean.evt
Size (bytes)239,569,920135,236,160
Size228.5 MB 129.0 MB
Events in quadrant A1,545,760898,962
Events in quadrant B1,724,353911,270
Events in quadrant C1,396,038889,855
Events in quadrant D2,053,634857,675

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158250
B0164940
C0156240
D0178520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7746740.955332%
B7746861.110250%
C7746440.568035%
D7746921.187710%

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 8241 7745 0 0 0.00% 0.00%
B 8241 7745 0 0 0.00% 0.00%
C 8241 7745 0 0 0.00% 0.00%
D 8241 7745 5 5 0.06% 0.06%

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 8 15 137788 1641.72 361 353 83.7
A 3 1 6991 79.29 361 353 83.7
A 11 116 3176 33.72 361 353 83.7
B 0 214 126143 1713.04 365 354 73.4
B 4 81 77290 1047.74 365 354 73.4
B 4 239 57635 780.07 365 354 73.4
C 9 68 6000 68.68 353 346 82.3
C 1 3 2349 24.33 353 346 82.3
C 10 22 2339 24.21 353 346 82.3
D 2 216 278757 3213.43 354 339 86.6
D 2 33 127974 1473.13 354 339 86.6
D 2 14 109171 1256.11 354 339 86.6

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