ASTROSAT CZTI

Data Quality Report

Orbit 20160313_T01_046T01_9000000372_level2

Creation date: 2018-11-02T18:02:25.082769
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/AS1T01_046T01_9000000372cztM0_level2_bc.evt modeM0/AS1T01_046T01_9000000372cztM0_level2_quad_clean.evt
Size (bytes)2,280,271,680973,952,640
Size2.1 GB 928.8 MB
Events in quadrant A14,760,7506,032,610
Events in quadrant B14,871,0936,164,143
Events in quadrant C16,557,5146,050,196
Events in quadrant D17,551,8815,911,398

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600230
B01603720
C01671530
D01693820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01190
D01200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015880
B015880
C015860
D015840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A779219471.215333%
B779219151.174266%
C7791316672.139566%
D7790512141.558308%

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 89347 77983 4 4 0.00% 0.01%
B 89347 77974 2 2 0.00% 0.00%
C 89347 77967 218 218 0.24% 0.28%
D 89347 77967 100 100 0.11% 0.13%

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 400517 498.03 3630 3538 797.1
A 12 133 270370 334.75 3630 3538 797.1
A 0 199 39632 45.28 3630 3538 797.1
B 10 244 133392 195.2 3684 3564 665.1
B 5 6 99879 144.81 3684 3564 665.1
B 4 200 84409 121.55 3684 3564 665.1
C 9 144 1914327 2453.61 3555 3487 778.8
C 10 65 190793 240.51 3555 3487 778.8
C 12 4 143121 179.3 3555 3487 778.8
D 2 184 938088 1140.3 3557 3437 819.7
D 11 130 531839 644.67 3557 3437 819.7
D 12 110 426897 516.63 3557 3437 819.7

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