ASTROSAT CZTI

Data Quality Report

Orbit 20210122_C05_019T04_9000004130_level2

Creation date: 2021-01-28T10:59:22.597095
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/AS1C05_019T04_9000004130cztM0_level2_bc.evt modeM0/AS1C05_019T04_9000004130cztM0_level2_quad_clean.evt
Size (bytes)5,320,805,7601,578,957,120
Size5.0 GB 1.5 GB
Events in quadrant A20,364,71310,794,746
Events in quadrant B21,133,22610,948,828
Events in quadrant C42,823,54110,136,599
Events in quadrant D70,273,1799,339,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019600
B019600
C019600
D019600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01410
B01410
C01410
D01410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01982490
B02023050
C02763250
D03711930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A963278450.877220%
B9632713891.441963%
C9632767006.955475%
D963271848919.193995%

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 110368 96322 14 14 0.01% 0.01%
B 110368 96313 30 30 0.03% 0.03%
C 110368 96310 276 276 0.25% 0.29%
D 110368 96306 7023 7023 6.36% 7.29%

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 15 174 209436 184.84 5132 5054 1105.7
A 13 254 164881 144.54 5132 5054 1105.7
A 5 98 112810 97.45 5132 5054 1105.7
B 4 80 665461 680.84 5149 5036 970.0
B 5 255 235140 237.22 5149 5036 970.0
B 10 245 132094 130.98 5149 5036 970.0
C 3 233 23537305 20775.16 4785 4775 1132.7
C 15 208 369815 322.27 4785 4775 1132.7
C 14 254 302737 263.05 4785 4775 1132.7
D 8 195 28923186 27101.35 4599 4451 1067.1
D 1 52 19381561 18159.36 4599 4451 1067.1
D 13 104 2217267 2073.75 4599 4451 1067.1

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