ASTROSAT CZTI

Data Quality Report

Orbit 11645

Creation date: 2024-06-27T16:16:22.641017
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/AS1A04_037T01_9000001716_11645cztM0_level2.evt modeM0/AS1A04_037T01_9000001716_11645cztM0_level2_quad_clean.evt
Size (bytes)714,352,320100,229,760
Size681.3 MB 95.6 MB
Events in quadrant A5,963,109608,674
Events in quadrant B5,065,722619,144
Events in quadrant C4,098,613607,885
Events in quadrant D5,903,040580,245

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238373
B0210122
C0182022
D0237302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89203223.609865%
B89202953.307175%
C8920450.504484%
D89203433.845291%

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 10341 8923 97 97 0.94% 1.09%
B 10341 8923 109 109 1.05% 1.22%
C 10341 8923 10 10 0.10% 0.11%
D 10341 8923 183 183 1.77% 2.05%

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 5 861817 3966.74 1057 1032 217.0
A 1 162 338249 1553.99 1057 1032 217.0
A 1 178 210151 963.68 1057 1032 217.0
B 4 239 797449 3871.53 1063 1035 205.7
B 15 204 80475 386.17 1063 1035 205.7
B 10 16 27580 129.04 1063 1035 205.7
C 15 208 41269 166.4 1038 1043 241.7
C 14 234 10395 38.69 1038 1043 241.7
C 13 61 7552 26.93 1038 1043 241.7
D 13 104 1061229 4325.04 1017 985 245.1
D 8 195 405880 1651.68 1017 985 245.1
D 10 253 168852 684.78 1017 985 245.1

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