ASTROSAT CZTI

Data Quality Report

Orbit 35210

Creation date: 2022-04-03T04:39:59.754226
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/AS1C07_004T01_9000005052_35210cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35210cztM0_level2_quad_clean.evt
Size (bytes)621,149,76072,832,320
Size592.4 MB 69.5 MB
Events in quadrant A2,897,731466,345
Events in quadrant B5,147,261442,504
Events in quadrant C3,192,992461,151
Events in quadrant D7,167,109414,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124963
B0193982
C0131012
D0255102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6015150.249377%
B601570511.720698%
C6015831.379884%
D60155068.412303%

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 7299 6016 9 9 0.12% 0.15%
B 7299 6016 405 405 5.55% 6.73%
C 7299 6016 64 64 0.88% 1.06%
D 7299 6016 531 531 7.27% 8.83%

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 10 83 104400 734.23 693 678 141.3
A 7 16 34270 237.79 693 678 141.3
A 13 6 26667 183.97 693 678 141.3
B 5 236 2279284 17956.86 662 648 126.9
B 4 232 143889 1128.81 662 648 126.9
B 15 85 32449 250.61 662 648 126.9
C 0 10 259525 1653.12 668 673 156.6
C 15 214 249907 1591.69 668 673 156.6
C 1 23 25452 158.25 668 673 156.6
D 8 195 3368991 20912.79 649 632 161.1
D 5 223 377573 2340.28 649 632 161.1
D 13 249 232355 1438.68 649 632 161.1

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