ASTROSAT CZTI

Data Quality Report

Orbit 20190501_A06_009T02_9000002882_level2

Creation date: 2019-05-02T11:44:11.315524
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/AS1A06_009T02_9000002882cztM0_level2_bc.evt modeM0/AS1A06_009T02_9000002882cztM0_level2_quad_clean.evt
Size (bytes)364,083,840115,240,320
Size347.2 MB 109.9 MB
Events in quadrant A1,796,077741,114
Events in quadrant B2,153,123750,937
Events in quadrant C1,877,275716,646
Events in quadrant D4,608,809686,398

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178710
B0190300
C0183060
D0269160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85681031.202148%
B85682082.427638%
C85681711.995798%
D85686197.224556%

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 9773 8566 0 0 0.00% 0.00%
B 9773 8566 1 1 0.01% 0.01%
C 9773 8567 0 0 0.00% 0.00%
D 9773 8568 144 144 1.47% 1.68%

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 18023 172.05 457 447 102.2
A 13 254 12643 119.39 457 447 102.2
A 11 29 8805 81.82 457 447 102.2
B 4 174 236321 2582.35 461 449 91.3
B 7 220 70384 765.66 461 449 91.3
B 0 190 18696 199.77 461 449 91.3
C 3 233 151724 1431.28 440 439 105.7
C 0 207 11652 106.08 440 439 105.7
C 4 175 9014 81.13 440 439 105.7
D 7 238 2863432 27788.62 439 423 103.0
D 2 234 34512 330.87 439 423 103.0
D 8 195 22819 217.38 439 423 103.0

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