ASTROSAT CZTI

Data Quality Report

Orbit 20170127_A02_111T01_9000000986_level2

Creation date: 2017-09-22T23:25:55.421235
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/AS1A02_111T01_9000000986cztM0_level2.evt modeM0/AS1A02_111T01_9000000986cztM0_level2_quad_clean.evt
Size (bytes)1,777,498,560377,542,080
Size1.7 GB 360.1 MB
Events in quadrant A12,518,3272,448,322
Events in quadrant B12,912,6922,506,932
Events in quadrant C11,782,5062,437,574
Events in quadrant D14,878,5952,271,812

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05260
B05260
C05260
D05260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0546130
B0560800
C0531350
D0626980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A257561810.702749%
B257562791.083243%
C25756870.337785%
D257567492.908060%

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 32471 25759 14 14 0.04% 0.05%
B 32471 25760 60 60 0.18% 0.23%
C 32471 25759 4 4 0.01% 0.02%
D 32471 25760 577 577 1.78% 2.24%

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 714620 1187.03 2992 2935 599.6
A 14 111 176124 288.86 2992 2935 599.6
A 13 248 59444 94.25 2992 2935 599.6
B 4 81 358959 627.3 3038 2968 567.5
B 0 214 324463 566.52 3038 2968 567.5
B 10 16 234116 407.31 3038 2968 567.5
C 9 68 237149 347.02 2942 2958 674.9
C 13 61 22783 29.38 2942 2958 674.9
C 10 22 20232 25.6 2942 2958 674.9
D 2 216 2332690 3350.62 2873 2786 695.4
D 2 14 591502 846.63 2873 2786 695.4
D 2 63 437268 624.83 2873 2786 695.4

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