ASTROSAT CZTI

Data Quality Report

Orbit 20210530_A10_094T78_9000004420_level2

Creation date: 2021-06-01T09:40:13.104125
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_094T78_9000004420cztM0_level2_bc.evt modeM0/AS1A10_094T78_9000004420cztM0_level2_quad_clean.evt
Size (bytes)1,525,055,040400,789,440
Size1.4 GB 382.2 MB
Events in quadrant A4,796,9622,815,965
Events in quadrant B10,215,9922,777,812
Events in quadrant C5,631,4102,679,827
Events in quadrant D24,125,5392,429,519

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04260
B04260
C04260
D04260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0445120
B0635650
C0477490
D01041400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208393831.837900%
B208396232.989587%
C208395402.591295%
D20839458321.992418%

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 23154 20839 2 2 0.01% 0.01%
B 23154 20839 1 1 0.00% 0.00%
C 23154 20840 0 0 0.00% 0.00%
D 23154 20839 2298 2298 9.92% 11.03%

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 401440 1630.09 1129 1115 245.6
A 13 254 36214 142.92 1129 1115 245.6
A 8 192 22216 85.92 1129 1115 245.6
B 6 159 5657578 26345.56 1117 1094 214.7
B 0 230 68417 313.56 1117 1094 214.7
B 4 171 45552 207.07 1117 1094 214.7
C 3 233 1387254 5446.53 1068 1066 254.5
C 0 10 45061 172.86 1068 1066 254.5
C 2 114 40484 154.88 1068 1066 254.5
D 8 195 15191684 57224.08 1029 1007 265.5
D 12 79 1797101 6765.98 1029 1007 265.5
D 12 227 1481790 5578.19 1029 1007 265.5

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