ASTROSAT CZTI

Data Quality Report

Orbit 20181003_A05_034T01_9000002404_level2

Creation date: 2018-11-01T13:21:06.446619
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/AS1A05_034T01_9000002404cztM0_level2_bc.evt modeM0/AS1A05_034T01_9000002404cztM0_level2_quad_clean.evt
Size (bytes)2,458,935,360974,148,480
Size2.3 GB 929.0 MB
Events in quadrant A17,805,5026,023,553
Events in quadrant B18,155,3916,219,316
Events in quadrant C15,701,1996,108,853
Events in quadrant D17,711,3866,031,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01644230
B01632890
C01563470
D01602140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015220
B015220
C015220
D015220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7473217492.340363%
B7473213301.779693%
C7473213271.775678%
D7473210201.364877%

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 91399 74738 10 10 0.01% 0.01%
B 91399 74735 23 23 0.03% 0.03%
C 91399 74735 0 0 0.00% 0.00%
D 91399 74738 42 42 0.05% 0.06%

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 2403911 2802.64 4004 3931 856.3
A 12 194 26177 25.98 4004 3931 856.3
A 0 226 26092 25.88 4004 3931 856.3
B 4 173 532410 702.16 4096 4003 752.5
B 0 198 399744 525.87 4096 4003 752.5
B 0 189 338945 445.08 4096 4003 752.5
C 3 233 271210 293.01 3968 3967 912.1
C 0 207 108856 115.0 3968 3967 912.1
C 7 247 49373 49.78 3968 3967 912.1
D 1 52 796025 817.7 4014 3912 968.7
D 10 70 593616 608.75 4014 3912 968.7
D 2 122 336930 343.77 4014 3912 968.7

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