ASTROSAT CZTI

Data Quality Report

Orbit 20170728_A03_053T01_9000001410_level2

Creation date: 2017-10-31T14:53:03.120859
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/AS1A03_053T01_9000001410cztM0_level2.evt modeM0/AS1A03_053T01_9000001410cztM0_level2_quad_clean.evt
Size (bytes)3,979,440,000625,242,240
Size3.7 GB 596.3 MB
Events in quadrant A28,731,4153,853,828
Events in quadrant B26,750,1713,962,661
Events in quadrant C23,349,2913,936,757
Events in quadrant D38,215,9873,649,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010500
B010500
C010500
D010500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01202150
B01134180
C01056220
D01479880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0810
C0810
D0810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5150017923.479612%
B515029841.910605%
C515094700.912462%
D5148522224.315820%

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 64435 51611 1080 1080 1.68% 2.09%
B 64435 51610 156 156 0.24% 0.30%
C 64435 51612 1 1 0.00% 0.00%
D 64435 51610 1758 1758 2.73% 3.41%

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 15 239 3894876 3168.25 6082 5961 1227.5
A 14 254 1191308 965.69 6082 5961 1227.5
A 15 174 118276 91.5 6082 5961 1227.5
B 4 81 1328673 1124.51 6168 6027 1176.2
B 4 239 500231 420.17 6168 6027 1176.2
B 0 214 313336 261.27 6168 6027 1176.2
C 13 61 44960 28.28 5961 5993 1378.0
C 14 67 38961 23.92 5961 5993 1378.0
C 12 4 33295 19.81 5961 5993 1378.0
D 8 195 5071022 3573.73 5823 5685 1417.4
D 2 16 3333773 2348.05 5823 5685 1417.4
D 1 52 2205860 1552.28 5823 5685 1417.4

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