ASTROSAT CZTI

Data Quality Report

Orbit 34802

Creation date: 2022-03-06T14:49:10.910361
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1C07_004T01_9000004990_34802cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34802cztM0_level2_quad_clean.evt
Size (bytes)440,827,20067,032,000
Size420.4 MB 63.9 MB
Events in quadrant A2,505,241422,235
Events in quadrant B3,209,307428,226
Events in quadrant C2,788,888432,714
Events in quadrant D4,484,413372,475

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108193
B0128722
C0112102
D0167792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533380.150009%
B53331853.468967%
C5333370.693793%
D53334167.800488%

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 9038 5335 1 1 0.01% 0.02%
B 9038 5335 115 115 1.27% 2.16%
C 9038 5335 23 23 0.25% 0.43%
D 9038 5335 401 401 4.44% 7.52%

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 10 83 49344 386.25 626 615 126.2
A 15 169 12885 97.26 626 615 126.2
A 13 6 12300 92.62 626 615 126.2
B 5 172 405228 3352.37 620 602 120.7
B 5 255 157876 1303.03 620 602 120.7
B 4 171 111833 921.56 620 602 120.7
C 15 214 228374 1608.58 613 618 141.6
C 0 10 111584 783.72 613 618 141.6
C 14 67 28842 199.34 613 618 141.6
D 12 233 752381 5215.46 585 567 144.2
D 2 249 558856 3872.94 585 567 144.2
D 8 195 483388 3349.41 585 567 144.2

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