ASTROSAT CZTI

Data Quality Report

Orbit 35077

Creation date: 2022-03-25T05:15:52.013483
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/AS1T05_015T01_9000005026_35077cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35077cztM0_level2_quad_clean.evt
Size (bytes)459,158,40087,140,160
Size437.9 MB 83.1 MB
Events in quadrant A2,499,354568,239
Events in quadrant B3,324,874572,549
Events in quadrant C2,741,999579,368
Events in quadrant D4,973,365540,956

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110223
B0134572
C0113162
D0185812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538860.111359%
B53881502.783964%
C5388220.408315%
D53881873.470676%

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 7119 5389 0 0 0.00% 0.00%
B 7119 5389 87 87 1.22% 1.61%
C 7119 5389 10 10 0.14% 0.19%
D 7119 5389 152 152 2.14% 2.82%

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 78522 621.53 622 610 125.4
A 13 6 12137 91.95 622 610 125.4
A 13 254 8322 61.52 622 610 125.4
B 5 172 549798 4683.21 616 600 117.3
B 0 189 141763 1203.75 616 600 117.3
B 0 190 89423 757.43 616 600 117.3
C 15 214 225828 1578.89 613 618 142.6
C 0 10 81671 568.24 613 618 142.6
C 14 67 43707 302.09 613 618 142.6
D 8 195 2017691 13861.49 601 585 145.5
D 13 249 350077 2401.7 601 585 145.5
D 2 250 114440 782.41 601 585 145.5

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