ASTROSAT CZTI

Data Quality Report

Orbit 20190119_A05_227T07_9000002666_level2

Creation date: 2019-01-21T11:34:53.886343
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_227T07_9000002666cztM0_level2_bc.evt modeM0/AS1A05_227T07_9000002666cztM0_level2_quad_clean.evt
Size (bytes)293,302,080100,077,120
Size279.7 MB 95.4 MB
Events in quadrant A1,819,479608,547
Events in quadrant B2,042,826629,816
Events in quadrant C1,805,483602,834
Events in quadrant D2,604,494575,614

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184010
B0191930
C0184260
D0209670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8854510.576011%
B8854780.880958%
C88541111.253671%
D88541591.795799%

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 11179 8854 0 0 0.00% 0.00%
B 11179 8854 0 0 0.00% 0.00%
C 11179 8854 0 0 0.00% 0.00%
D 11179 8854 19 19 0.17% 0.21%

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 9256 84.55 468 457 104.1
A 13 210 8665 78.87 468 457 104.1
A 4 2 4337 37.28 468 457 104.1
B 0 189 65325 704.39 481 469 92.1
B 0 244 56662 610.31 481 469 92.1
B 15 222 21142 224.53 481 469 92.1
C 3 233 10043 86.88 464 460 110.3
C 5 218 6976 59.07 464 460 110.3
C 13 61 2787 21.1 464 460 110.3
D 5 222 379545 3453.64 466 449 109.8
D 12 110 133329 1210.56 466 449 109.8
D 2 165 70926 642.06 466 449 109.8

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