ASTROSAT CZTI

Data Quality Report

Orbit 20190205_T03_014T01_9000002704_level2

Creation date: 2019-02-07T09:53:03.760879
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/AS1T03_014T01_9000002704cztM0_level2_bc.evt modeM0/AS1T03_014T01_9000002704cztM0_level2_quad_clean.evt
Size (bytes)1,950,079,680612,576,000
Size1.8 GB 584.2 MB
Events in quadrant A12,716,8183,817,881
Events in quadrant B11,135,1873,902,979
Events in quadrant C12,508,5303,756,375
Events in quadrant D19,352,2393,707,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0890
C0890
D0890

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010020
B010020
C010020
D010020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01108320
B01046670
C01120290
D01303710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4909310642.167315%
B490935981.218096%
C4909314452.943393%
D4909310052.047135%

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 58128 49096 56 56 0.10% 0.11%
B 58128 49094 3 3 0.01% 0.01%
C 58128 49093 52 52 0.09% 0.11%
D 58128 49093 98 98 0.17% 0.20%

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 2368837 4107.45 2683 2636 576.1
A 4 2 50475 83.04 2683 2636 576.1
A 0 226 17790 26.31 2683 2636 576.1
B 7 220 295615 581.63 2707 2645 503.7
B 0 189 184310 360.66 2707 2645 503.7
B 0 229 52591 99.16 2707 2645 503.7
C 4 254 2495493 4160.44 2584 2574 599.2
C 3 233 28504 43.27 2584 2574 599.2
C 5 218 26285 39.57 2584 2574 599.2
D 7 238 6642809 10777.81 2665 2571 616.1
D 10 70 524542 847.21 2665 2571 616.1
D 13 168 496849 802.27 2665 2571 616.1

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