ASTROSAT CZTI

Data Quality Report

Orbit 36115

Creation date: 2022-08-10T12:46:51.490165
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/AS1T04_069T01_9000005158_36115cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36115cztM0_level2_quad_clean.evt
Size (bytes)457,588,80062,729,280
Size436.4 MB 59.8 MB
Events in quadrant A2,525,252404,075
Events in quadrant B3,000,769408,540
Events in quadrant C2,764,717393,243
Events in quadrant D5,227,486342,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105093
B0120272
C0109912
D0188652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500690.179784%
B5006891.777867%
C5006551.098682%
D500680816.140631%

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 7009 5007 1 1 0.01% 0.02%
B 7009 5007 51 51 0.73% 1.02%
C 7009 5007 51 51 0.73% 1.02%
D 7009 5007 870 870 12.41% 17.38%

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 164092 1333.14 607 598 122.6
A 13 6 11145 86.0 607 598 122.6
A 13 254 7587 56.99 607 598 122.6
B 5 172 301116 2595.25 604 588 115.8
B 5 236 165063 1420.35 604 588 115.8
B 0 213 118256 1016.14 604 588 115.8
C 0 10 241165 1759.44 587 591 136.7
C 15 214 222111 1620.09 587 591 136.7
C 1 23 6062 40.01 587 591 136.7
D 10 203 1428223 10444.48 556 540 136.7
D 1 52 881173 6442.44 556 540 136.7
D 12 17 174517 1272.76 556 540 136.7

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