ASTROSAT CZTI

Data Quality Report

Orbit 35089

Creation date: 2022-03-28T15:49:26.628723
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_35089cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35089cztM0_level2_quad_clean.evt
Size (bytes)449,006,40074,759,040
Size428.2 MB 71.3 MB
Events in quadrant A2,692,655486,535
Events in quadrant B3,570,400483,501
Events in quadrant C2,842,027494,089
Events in quadrant D4,162,895457,873

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110923
B0136662
C0113132
D0159182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4868180.369762%
B48682986.121611%
C4868651.335251%
D48682424.971241%

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 6990 4869 5 5 0.07% 0.10%
B 6990 4869 193 193 2.76% 3.96%
C 6990 4869 41 41 0.59% 0.84%
D 6990 4869 234 234 3.35% 4.81%

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 80399 639.25 636 624 124.8
A 9 143 68263 542.0 636 624 124.8
A 15 174 38730 305.35 636 624 124.8
B 5 172 989911 8467.75 624 609 116.8
B 5 255 47182 398.63 624 609 116.8
B 15 85 39117 329.6 624 609 116.8
C 15 214 204420 1420.57 627 633 143.5
C 0 10 159880 1110.09 627 633 143.5
C 12 250 16667 111.77 627 633 143.5
D 8 195 770468 5193.22 613 596 148.2
D 7 80 509854 3435.23 613 596 148.2
D 13 249 182377 1226.22 613 596 148.2

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