ASTROSAT CZTI

Data Quality Report

Orbit 20190307_A05_075T01_9000002768_level2

Creation date: 2019-03-28T14:46:51.649307
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_075T01_9000002768cztM0_level2_bc.evt modeM0/AS1A05_075T01_9000002768cztM0_level2_quad_clean.evt
Size (bytes)481,662,720199,987,200
Size459.3 MB 190.7 MB
Events in quadrant A2,891,0791,279,845
Events in quadrant B2,963,6851,319,104
Events in quadrant C3,059,3241,291,195
Events in quadrant D4,755,8801,244,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280190
B0283180
C0289950
D0338960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133571210.905892%
B133571981.482369%
C133572441.826758%
D133574653.481321%

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 16952 13357 0 0 0.00% 0.00%
B 16952 13357 0 0 0.00% 0.00%
C 16952 13357 0 0 0.00% 0.00%
D 16952 13358 45 45 0.27% 0.34%

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 15 192 23324 140.88 740 725 160.4
A 13 254 17999 107.68 740 725 160.4
A 12 96 15087 89.53 740 725 160.4
B 0 229 44016 304.54 756 740 142.1
B 0 189 9800 63.76 756 740 142.1
B 0 244 8968 57.9 756 740 142.1
C 3 233 134048 768.41 737 735 173.5
C 9 221 62556 356.33 737 735 173.5
C 9 54 30258 170.17 737 735 173.5
D 1 52 1810433 10662.49 739 716 169.7
D 7 238 86750 506.9 739 716 169.7
D 2 234 49397 286.82 739 716 169.7

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